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module 5 and exam
Problem Set 5.1Problem Set 5.11. Describe, in your own words the sampling distribution of x̄.- Click here to enter answer ...
module 5 and exam
Problem Set 5.1Problem Set 5.11. Describe, in your own words the sampling distribution of x̄.- Click here to enter answer - 2. For the sampling distribution of x̄, is it necessary that the samples used in the distribution be all of the same size?- Click here to enter answer - 3. What is E(x̄)? What is E(x̄) equal to?- Click here to enter answer - 4. Suppose you take a random sample and find the sample mean, x̄. Based on the previous problem, can you say that x̄ is equal to the mean of the entire population µ?- Click here to enter answer - Problem Set 5.2Problem Set 5.21. Suppose that you are attempting to estimate the weight of 600 parts. In order to use the infinite standard deviation formula, what sample size, n, should you use?- Click here to enter answer - 2. A nursing home has 2000 patients. You sample 170 patients. Can you use the infinite standard deviation formula?- Click here to enter answer - 3. Suppose that you take a sample of size 15 from a population that is known to be normally distributed. Can the sampling distribution of x̄ be approximated by a normal probability distribution?- Click here to enter answer - 4. Suppose that you take a sample of size 20 from a population that is not normally distributed. Can the sampling distribution of x̄ be approximated by a normal probability distribution?- Click here to enter answer - 5. Suppose that you take a sample of size 40 from a population that is normally distributed. Can the sampling distribution of x̄ be approximated by a normal probability distribution? What if the population was not normally distributed, can the sampling distribution of x̄ be approximated by a normal probability distribution?- Click here to enter answer - Problem Set 5.3Problem Set 5.31. Suppose a pharmaceutical company wants to do a study of the commissions of its sales force. Let's assume that there are 4,300 sales people and the population mean for the sales force is $52,400 in commissions and has a population standard deviation of $3,500. What is the probability that a simple random sample of 50 members of the sales force will have commissions within $400 of the population mean?- Click here to enter answer - 2. Suppose that in a certain large city, the mean 100 meter dash time for male high school seniors was reported to be 13.3 seconds with a standard deviation of 1.9 seconds. We may assume that the population is normally distributed.a) What is the probability that 20 male high school seniors selected at random will have a mean 100 meter dash time of 12.5 seconds or less?- Click here to enter answer - b) What is the probability that 40 male high school seniors selected at random will have a mean 100 meter dash time of 12.5 seconds or less?- Click here to enter answer - c) What is the probability that 35 male high school seniors selected at random will have a mean 100 meter dash time between 13 seconds and 14 seconds?- Click here to enter answer - 3. Suppose that you have a large number of potatoes. The mean weight of the potatoes is 7.4 ounces with a standard deviation of 2.2 ounces. We may assume a normal distribution.a) If you choose 25 potatoes at random, what is the probability that the mean of this sample of 25 potatoes is between 7 and 8 ounces?- Click here to enter answer -b) If you choose 45 potatoes at random, what is the probability that the mean of this sample of 45 potatoes is less than 7 ounces?- Click here to enter answer -c) If you choose 40 potatoes at random, what is the probability that the mean of this sample of 40 potatoes is more than 7.5 ounces?- Click here to enter answer -Problem Set 5.4Problem Set 5.41. According to the American Diabetes Association (2013), 8.3 % of the U.S. population have diabetes.a) Suppose that you take a random of 80 Americans, what is the probability that 7 % or less of these 80 people have diabetes?- Click here to enter answer - b) Suppose that you take a random of 120 Americans, what is the probability that 8 % or more of these 120 people have diabetes?- Click here to enter answer -
Section 8 Chapter 8 Hypothesis Testing Scientific Process Analysis Paper
How would you describe Hypothesis Testing to a friend outside of this statistics class?You may use the information in the ...
Section 8 Chapter 8 Hypothesis Testing Scientific Process Analysis Paper
How would you describe Hypothesis Testing to a friend outside of this statistics class?You may use the information in the textbook or create your own problem. Formulas are not required.Please remember to use APA formatting if you use help from the textbook or a website. Try to use your own words!
Troy University Descriptive Statistics Real Estate Worksheet
A.
Create the Descriptive Statistics for "Price" and "SQFT" - Include a 95% Confidence Test on the Population ...
Troy University Descriptive Statistics Real Estate Worksheet
A.
Create the Descriptive Statistics for "Price" and "SQFT" - Include a 95% Confidence Test on the Population Mean
B.
Produce a Scatterplot for Price (Dependent) and SQFT (Independent) (PLACE BELOW)
C.
Conduct a 95% Hypothesis Test (i.e., α = .05) to determine if the Mean Price of Houses is greater than $242,512. Use a
Population Standard Deviation of $172,000 for your Z-test (i.e., we are determing if the mean has increased from the previous year).
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module 5 and exam
Problem Set 5.1Problem Set 5.11. Describe, in your own words the sampling distribution of x̄.- Click here to enter answer ...
module 5 and exam
Problem Set 5.1Problem Set 5.11. Describe, in your own words the sampling distribution of x̄.- Click here to enter answer - 2. For the sampling distribution of x̄, is it necessary that the samples used in the distribution be all of the same size?- Click here to enter answer - 3. What is E(x̄)? What is E(x̄) equal to?- Click here to enter answer - 4. Suppose you take a random sample and find the sample mean, x̄. Based on the previous problem, can you say that x̄ is equal to the mean of the entire population µ?- Click here to enter answer - Problem Set 5.2Problem Set 5.21. Suppose that you are attempting to estimate the weight of 600 parts. In order to use the infinite standard deviation formula, what sample size, n, should you use?- Click here to enter answer - 2. A nursing home has 2000 patients. You sample 170 patients. Can you use the infinite standard deviation formula?- Click here to enter answer - 3. Suppose that you take a sample of size 15 from a population that is known to be normally distributed. Can the sampling distribution of x̄ be approximated by a normal probability distribution?- Click here to enter answer - 4. Suppose that you take a sample of size 20 from a population that is not normally distributed. Can the sampling distribution of x̄ be approximated by a normal probability distribution?- Click here to enter answer - 5. Suppose that you take a sample of size 40 from a population that is normally distributed. Can the sampling distribution of x̄ be approximated by a normal probability distribution? What if the population was not normally distributed, can the sampling distribution of x̄ be approximated by a normal probability distribution?- Click here to enter answer - Problem Set 5.3Problem Set 5.31. Suppose a pharmaceutical company wants to do a study of the commissions of its sales force. Let's assume that there are 4,300 sales people and the population mean for the sales force is $52,400 in commissions and has a population standard deviation of $3,500. What is the probability that a simple random sample of 50 members of the sales force will have commissions within $400 of the population mean?- Click here to enter answer - 2. Suppose that in a certain large city, the mean 100 meter dash time for male high school seniors was reported to be 13.3 seconds with a standard deviation of 1.9 seconds. We may assume that the population is normally distributed.a) What is the probability that 20 male high school seniors selected at random will have a mean 100 meter dash time of 12.5 seconds or less?- Click here to enter answer - b) What is the probability that 40 male high school seniors selected at random will have a mean 100 meter dash time of 12.5 seconds or less?- Click here to enter answer - c) What is the probability that 35 male high school seniors selected at random will have a mean 100 meter dash time between 13 seconds and 14 seconds?- Click here to enter answer - 3. Suppose that you have a large number of potatoes. The mean weight of the potatoes is 7.4 ounces with a standard deviation of 2.2 ounces. We may assume a normal distribution.a) If you choose 25 potatoes at random, what is the probability that the mean of this sample of 25 potatoes is between 7 and 8 ounces?- Click here to enter answer -b) If you choose 45 potatoes at random, what is the probability that the mean of this sample of 45 potatoes is less than 7 ounces?- Click here to enter answer -c) If you choose 40 potatoes at random, what is the probability that the mean of this sample of 40 potatoes is more than 7.5 ounces?- Click here to enter answer -Problem Set 5.4Problem Set 5.41. According to the American Diabetes Association (2013), 8.3 % of the U.S. population have diabetes.a) Suppose that you take a random of 80 Americans, what is the probability that 7 % or less of these 80 people have diabetes?- Click here to enter answer - b) Suppose that you take a random of 120 Americans, what is the probability that 8 % or more of these 120 people have diabetes?- Click here to enter answer -
Section 8 Chapter 8 Hypothesis Testing Scientific Process Analysis Paper
How would you describe Hypothesis Testing to a friend outside of this statistics class?You may use the information in the ...
Section 8 Chapter 8 Hypothesis Testing Scientific Process Analysis Paper
How would you describe Hypothesis Testing to a friend outside of this statistics class?You may use the information in the textbook or create your own problem. Formulas are not required.Please remember to use APA formatting if you use help from the textbook or a website. Try to use your own words!
Troy University Descriptive Statistics Real Estate Worksheet
A.
Create the Descriptive Statistics for "Price" and "SQFT" - Include a 95% Confidence Test on the Population ...
Troy University Descriptive Statistics Real Estate Worksheet
A.
Create the Descriptive Statistics for "Price" and "SQFT" - Include a 95% Confidence Test on the Population Mean
B.
Produce a Scatterplot for Price (Dependent) and SQFT (Independent) (PLACE BELOW)
C.
Conduct a 95% Hypothesis Test (i.e., α = .05) to determine if the Mean Price of Houses is greater than $242,512. Use a
Population Standard Deviation of $172,000 for your Z-test (i.e., we are determing if the mean has increased from the previous year).
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