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Montclair State T Test Null Hypothesis and Correlation Questions
1. What is the null hypothesis for comparing performance ratings by gender? 2. Run a t-test on the data in the spreadsh ...
Montclair State T Test Null Hypothesis and Correlation Questions
1. What is the null hypothesis for comparing performance ratings by gender? 2. Run a t-test on the data in the spreadsheet. Use a two-tailed, two sample equal variance test. What is the t-value? Round to three decimal points (e.g. 0.351) 3. Is there a significant difference in performance ratings by gender? Group of answer choices: No Yes 4. What is the null hypothesis for determining if there is a relationship between Job Level and Performance Ratings? 5. Run an analysis to determine if there is a correlation between Job Level and Performance Rating. See Correlation in Excel for how to do this analysis in Excel. What is the correlation co-efficient? Round to two decimal points (e.g. 0.04) 6. What is the t-value for this relationship? Round to two decimal points (e.g. 0.04) To answer this question, you have to covert the correlation co-efficient to a t value, using the following formula: t = r × n − 2 1 − r 2 r= the correlation co-efficient n= the number of observations 7. Is the relationship between Job Level and Performance Ratings significant? To answer this question, you can convert the t-value to a p-value in excel using the following command. =t.dist.2t(t, degrees of freedom) t.dist.2t is the command in excel for a two-tailed Student's T output The t in the parenthesis is the value you calculated above (if this is negative, covert it to a positive number by multiplying it by -1) The degrees of freedom = (number of observations - 2) If the value you find is less than 0.05, then the relationship is significant. Group of answer choices: No Yes
11 pages
20210129163350mba 624 Exam 1 1
40 questions, each worth 2.5 points, for a total of 100 points. You may use your book, notes, calculator, Excel, and other ...
20210129163350mba 624 Exam 1 1
40 questions, each worth 2.5 points, for a total of 100 points. You may use your book, notes, calculator, Excel, and other resources such as videos ...
25 Calc Questions
1.Use the graph of f(x) below to estimate the value of f '(-2): (4 points)-10142.Given the graph of f '(x), the derivativ ...
25 Calc Questions
1.Use the graph of f(x) below to estimate the value of f '(-2): (4 points)-10142.Given the graph of f '(x), the derivative of f(x), which of the following statements are true about the graph of f(x)? (4 points)I. The graph of f has a critical point at x = 0. II. The graph of f has a critical point at x = 1. III. The graph of f has a point of inflection at x = 1.I onlyII onlyIII onlyI and III only3.Find the critical point of the function f(x) = x2 - 2x + 7. (4 points)(-1, 10)(-1, 6)(1, 0)(1, 6)4.For what values of x is the graph of concave upward? (4 points)No values of xx < 6x > -6x > 65.At what value(s) of x does f(x) = x4 - 18x2 have a critical point where the graph changes from decreasing to increasing?(4 points)0 and -3 only0 and 3 only-3, and 3 only0 only1.The maximum value of f(x) = 2x3 - 18x2 + 48x - 1 on the interval [0, 3] is (4 points)-13935712.In which interval is the function f(x) = - 4x2 + 12x + 1 increasing? (4 points)(-∞, 2) only(-∞, 2) U (6, ∞)(6, ∞) only(2, 6) only3.What are the critical values on the graph of y = x4 + 6x2 - 5? (4 points)x = -1 and 1x = -3, 0, and 3x = 0There are no critical values for this function.4.Find the x-coordinate of the point(s) of inflection on the graph of y = x3 - 12x2 - 5. (4 points)x = -2x = 4x = 2x = 125.Which one of the following statements is true? (4 points)If f ′′(x) > 0 on the interval (a, b), then f is concave up on the interval (a, b).If f ''(c) = 0, then x = c is an inflection point on the graph of f(x).If f is continuous on a closed interval [a, b], then f attains an absolute maximum value and f attains an absolute minimum inside the interval [a, b].None of these are true.1.Find the absolute maximum value of the function . (4 points)0412None of these2.In the answer space below, provide one of the two positive integers whose product is 196 and whose sum is a minimum. (4 points) 3.A farmer has 1,800 feet of fencing and wants to fence off a rectangular field that borders a straight river. He needs no fence along the river. Write the function that will produce the largest area if x is the short side of the rectangle. (4 points)f(x) = -2x2 + 1800xf(x) = -x2 + 1800xf(x) = x2 - 1800f(x) = 2x2 - 18004.What is the area of the largest rectangle with lower base on the x-axis and upper vertices on the curve y = 12 - x2? (4 points)81216325.If 600 cm2 of material is available to make a box with a square base and a closed top, find the maximum volume of the box in cubic centimeters. Answer to the nearest cubic centimeter without commas. For example, if the answer is 2,000 write 2000. (4 points)1.A particle moves with velocity function v(t) = - t2 + 5t - 3, with v measured in feet per second and t measured in seconds. Find the acceleration of the particle at time t = 3 seconds. (4 points) feet per second2-1 feet per second2-3 feet per second26 feet per second22.A particle is moving along the x-axis so that its position at t ≥ 0 is given by s(t) = (t)In(2t). Find the acceleration of the particle when the velocity is first zero. (4 points)2e22eeNone of these3.The driver of a car traveling at 60 ft/sec suddenly applies the brakes. The position of the car is s(t) = 50t - 2t2, t seconds after the driver applies the brakes. How many seconds after the driver applies the brakes does the car come to a stop? (4 points)12.5 sec10 sec15 sec60 sec4.The position of a particle on the x-axis at time t, t > 0, is s(t) = ln(t) with t measured in seconds and s(t) measured in feet. What is the average velocity of the particle for e ≤ t ≤ 2e? (4 points)ln25.A particle moves along the x-axis so that at any time t, measured in seconds, its position is given by s(t) = 4sin(t) - cos(2t), measured in feet. What is the acceleration of the particle at time t = 0 seconds? (4 points) 1.If y = 2x3 - 4x and , find when x = 1. Give only the numerical answer. For example, if = 3, type only 3. (4 points) 2.The area A = πr2 of a circular oil spill changes with the radius. At what rate does the area change with respect to the radius when r = 3ft? (4 points)6π ft2/ft3π ft2/ft6 ft2/ft9π ft2/ft3.A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by V = x2h cm3. Find the rate at which the volume of the box is changing when the edge length of the base is 4 cm, the edge length of the base is increasing at a rate of 2 cm/min, the height of the box is 15 cm, and the height is decreasing at a rate of 3 cm/min. (4 points)The volume of the box is decreasing at a rate of 192 cm3/min.The volume of the box is increasing at a rate of 288 cm3/min.The volume of the box is decreasing at a rate of 288 cm3/min.The volume of the box is increasing at a rate of 192 cm3/min.4.The height of a cylinder with a fixed radius of 6 cm is increasing at the rate of 3 cm/min. Find the rate of change of the volume of the cylinder (with respect to time) when the height is 20cm. (4 points)36π108π360πNone of these5.A 10-ft ladder rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 1 ft/sec, how fast, in ft/sec, is the top of the ladder sliding down the wall, at the instant when the bottom of the ladder is 6 ft from the wall? Answer with 2 decimal places. Type your answer in the space below. If your answer is a number less than 1, place a leading "0" before the decimal point (ex: 0.35). (4 points)
Mathematics ct3
Question #1 – Simple InterestJason needed to borrow $4,000 to pay for plane tickets to Europe. His bank offered him a si ...
Mathematics ct3
Question #1 – Simple InterestJason needed to borrow $4,000 to pay for plane tickets to Europe. His bank offered him a simple interest loan with an 8% annual interest rate and a 24-month term. Jason does not want to pay any more interest than he must so he checked with his credit union and found they would offer him the same loan amount with 6% simple interest on a 3-year loan. Jason’s loan at both institutions was structured as an installment loan.Calculate the finance charge (interest), the total installment price, and the monthly payment for the bank loan.Calculate the finance charge (interest), the total installment price, and the monthly payment for the credit union loan.Which loan is going cost Jason more in terms of finance charge?Aside from the finance charge consideration, what other factors might influence Jason’s choice of loan?Question #2 – Effective Annual YeildA savings account has a nominal rate of 7%. The interest is compounded daily. Find the account’s effective yield assuming 360 days in a year.Question #3 – Annuity PaymentDavid is saving money to open a workout gym. He needs $10,000 in three years to purchase equipment and initiate a building lease. He’s investing his savings in an annuity yielding an annual interest rate of 6.5% compounded monthly. If the annuity requires that David make monthly investments, what annuity payment must Jeremy make to save $10,000?Requirements: Show all your work so that the instructor clearly sees how you solved the problem.Make sure your final answer is clear and visible.
15 pages
Control Chart Exercises
Question: Does this process show common or special cause to investigate and eliminate the cause (whether it is commo As ca ...
Control Chart Exercises
Question: Does this process show common or special cause to investigate and eliminate the cause (whether it is commo As can be seen in the run chart ...
statistics for decision making
lab work for statistics and decision making class. All the information is attached in files below . thank you in advance
statistics for decision making
lab work for statistics and decision making class. All the information is attached in files below . thank you in advance
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Montclair State T Test Null Hypothesis and Correlation Questions
1. What is the null hypothesis for comparing performance ratings by gender? 2. Run a t-test on the data in the spreadsh ...
Montclair State T Test Null Hypothesis and Correlation Questions
1. What is the null hypothesis for comparing performance ratings by gender? 2. Run a t-test on the data in the spreadsheet. Use a two-tailed, two sample equal variance test. What is the t-value? Round to three decimal points (e.g. 0.351) 3. Is there a significant difference in performance ratings by gender? Group of answer choices: No Yes 4. What is the null hypothesis for determining if there is a relationship between Job Level and Performance Ratings? 5. Run an analysis to determine if there is a correlation between Job Level and Performance Rating. See Correlation in Excel for how to do this analysis in Excel. What is the correlation co-efficient? Round to two decimal points (e.g. 0.04) 6. What is the t-value for this relationship? Round to two decimal points (e.g. 0.04) To answer this question, you have to covert the correlation co-efficient to a t value, using the following formula: t = r × n − 2 1 − r 2 r= the correlation co-efficient n= the number of observations 7. Is the relationship between Job Level and Performance Ratings significant? To answer this question, you can convert the t-value to a p-value in excel using the following command. =t.dist.2t(t, degrees of freedom) t.dist.2t is the command in excel for a two-tailed Student's T output The t in the parenthesis is the value you calculated above (if this is negative, covert it to a positive number by multiplying it by -1) The degrees of freedom = (number of observations - 2) If the value you find is less than 0.05, then the relationship is significant. Group of answer choices: No Yes
11 pages
20210129163350mba 624 Exam 1 1
40 questions, each worth 2.5 points, for a total of 100 points. You may use your book, notes, calculator, Excel, and other ...
20210129163350mba 624 Exam 1 1
40 questions, each worth 2.5 points, for a total of 100 points. You may use your book, notes, calculator, Excel, and other resources such as videos ...
25 Calc Questions
1.Use the graph of f(x) below to estimate the value of f '(-2): (4 points)-10142.Given the graph of f '(x), the derivativ ...
25 Calc Questions
1.Use the graph of f(x) below to estimate the value of f '(-2): (4 points)-10142.Given the graph of f '(x), the derivative of f(x), which of the following statements are true about the graph of f(x)? (4 points)I. The graph of f has a critical point at x = 0. II. The graph of f has a critical point at x = 1. III. The graph of f has a point of inflection at x = 1.I onlyII onlyIII onlyI and III only3.Find the critical point of the function f(x) = x2 - 2x + 7. (4 points)(-1, 10)(-1, 6)(1, 0)(1, 6)4.For what values of x is the graph of concave upward? (4 points)No values of xx < 6x > -6x > 65.At what value(s) of x does f(x) = x4 - 18x2 have a critical point where the graph changes from decreasing to increasing?(4 points)0 and -3 only0 and 3 only-3, and 3 only0 only1.The maximum value of f(x) = 2x3 - 18x2 + 48x - 1 on the interval [0, 3] is (4 points)-13935712.In which interval is the function f(x) = - 4x2 + 12x + 1 increasing? (4 points)(-∞, 2) only(-∞, 2) U (6, ∞)(6, ∞) only(2, 6) only3.What are the critical values on the graph of y = x4 + 6x2 - 5? (4 points)x = -1 and 1x = -3, 0, and 3x = 0There are no critical values for this function.4.Find the x-coordinate of the point(s) of inflection on the graph of y = x3 - 12x2 - 5. (4 points)x = -2x = 4x = 2x = 125.Which one of the following statements is true? (4 points)If f ′′(x) > 0 on the interval (a, b), then f is concave up on the interval (a, b).If f ''(c) = 0, then x = c is an inflection point on the graph of f(x).If f is continuous on a closed interval [a, b], then f attains an absolute maximum value and f attains an absolute minimum inside the interval [a, b].None of these are true.1.Find the absolute maximum value of the function . (4 points)0412None of these2.In the answer space below, provide one of the two positive integers whose product is 196 and whose sum is a minimum. (4 points) 3.A farmer has 1,800 feet of fencing and wants to fence off a rectangular field that borders a straight river. He needs no fence along the river. Write the function that will produce the largest area if x is the short side of the rectangle. (4 points)f(x) = -2x2 + 1800xf(x) = -x2 + 1800xf(x) = x2 - 1800f(x) = 2x2 - 18004.What is the area of the largest rectangle with lower base on the x-axis and upper vertices on the curve y = 12 - x2? (4 points)81216325.If 600 cm2 of material is available to make a box with a square base and a closed top, find the maximum volume of the box in cubic centimeters. Answer to the nearest cubic centimeter without commas. For example, if the answer is 2,000 write 2000. (4 points)1.A particle moves with velocity function v(t) = - t2 + 5t - 3, with v measured in feet per second and t measured in seconds. Find the acceleration of the particle at time t = 3 seconds. (4 points) feet per second2-1 feet per second2-3 feet per second26 feet per second22.A particle is moving along the x-axis so that its position at t ≥ 0 is given by s(t) = (t)In(2t). Find the acceleration of the particle when the velocity is first zero. (4 points)2e22eeNone of these3.The driver of a car traveling at 60 ft/sec suddenly applies the brakes. The position of the car is s(t) = 50t - 2t2, t seconds after the driver applies the brakes. How many seconds after the driver applies the brakes does the car come to a stop? (4 points)12.5 sec10 sec15 sec60 sec4.The position of a particle on the x-axis at time t, t > 0, is s(t) = ln(t) with t measured in seconds and s(t) measured in feet. What is the average velocity of the particle for e ≤ t ≤ 2e? (4 points)ln25.A particle moves along the x-axis so that at any time t, measured in seconds, its position is given by s(t) = 4sin(t) - cos(2t), measured in feet. What is the acceleration of the particle at time t = 0 seconds? (4 points) 1.If y = 2x3 - 4x and , find when x = 1. Give only the numerical answer. For example, if = 3, type only 3. (4 points) 2.The area A = πr2 of a circular oil spill changes with the radius. At what rate does the area change with respect to the radius when r = 3ft? (4 points)6π ft2/ft3π ft2/ft6 ft2/ft9π ft2/ft3.A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by V = x2h cm3. Find the rate at which the volume of the box is changing when the edge length of the base is 4 cm, the edge length of the base is increasing at a rate of 2 cm/min, the height of the box is 15 cm, and the height is decreasing at a rate of 3 cm/min. (4 points)The volume of the box is decreasing at a rate of 192 cm3/min.The volume of the box is increasing at a rate of 288 cm3/min.The volume of the box is decreasing at a rate of 288 cm3/min.The volume of the box is increasing at a rate of 192 cm3/min.4.The height of a cylinder with a fixed radius of 6 cm is increasing at the rate of 3 cm/min. Find the rate of change of the volume of the cylinder (with respect to time) when the height is 20cm. (4 points)36π108π360πNone of these5.A 10-ft ladder rests against a vertical wall. If the bottom of the ladder slides away from the wall at a rate of 1 ft/sec, how fast, in ft/sec, is the top of the ladder sliding down the wall, at the instant when the bottom of the ladder is 6 ft from the wall? Answer with 2 decimal places. Type your answer in the space below. If your answer is a number less than 1, place a leading "0" before the decimal point (ex: 0.35). (4 points)
Mathematics ct3
Question #1 – Simple InterestJason needed to borrow $4,000 to pay for plane tickets to Europe. His bank offered him a si ...
Mathematics ct3
Question #1 – Simple InterestJason needed to borrow $4,000 to pay for plane tickets to Europe. His bank offered him a simple interest loan with an 8% annual interest rate and a 24-month term. Jason does not want to pay any more interest than he must so he checked with his credit union and found they would offer him the same loan amount with 6% simple interest on a 3-year loan. Jason’s loan at both institutions was structured as an installment loan.Calculate the finance charge (interest), the total installment price, and the monthly payment for the bank loan.Calculate the finance charge (interest), the total installment price, and the monthly payment for the credit union loan.Which loan is going cost Jason more in terms of finance charge?Aside from the finance charge consideration, what other factors might influence Jason’s choice of loan?Question #2 – Effective Annual YeildA savings account has a nominal rate of 7%. The interest is compounded daily. Find the account’s effective yield assuming 360 days in a year.Question #3 – Annuity PaymentDavid is saving money to open a workout gym. He needs $10,000 in three years to purchase equipment and initiate a building lease. He’s investing his savings in an annuity yielding an annual interest rate of 6.5% compounded monthly. If the annuity requires that David make monthly investments, what annuity payment must Jeremy make to save $10,000?Requirements: Show all your work so that the instructor clearly sees how you solved the problem.Make sure your final answer is clear and visible.
15 pages
Control Chart Exercises
Question: Does this process show common or special cause to investigate and eliminate the cause (whether it is commo As ca ...
Control Chart Exercises
Question: Does this process show common or special cause to investigate and eliminate the cause (whether it is commo As can be seen in the run chart ...
statistics for decision making
lab work for statistics and decision making class. All the information is attached in files below . thank you in advance
statistics for decision making
lab work for statistics and decision making class. All the information is attached in files below . thank you in advance
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