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Mathematics

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1.What is the margin of error for a sample size of 230 people?

2.What is the margin of error for a sample size of 1000 people?

3.Calculate the mean, median, mode, range, and 5 Number Summary of the following data set:


1, 3, 4, 4, 4, 5, 6, 7, 8, 9, 10, 10, 11, 14, 15, 18, 18, 18, 18, 20


4.Use the following histogram to answer the question:

How many participants slept five (5) hours?


5.Give an example of a cluster sample. (You cannot use the examples in the lectures/notes/previous quizzes. BE CREATIVE!!)

6.If the null hypothesis of an experiment is “The true mean weight of the geese is greater than 40 pounds” what is the alternate hypothesis?

7.Give an example of a stratified random sample. (You cannot use the examples in the lectures/notes/previous quizzes. BE CREATIVE!!)

8.Use the following histogram for the question:

How many participants slept seven (7) hours?


9.If the alternate hypothesis of an experiment is “The true mean height of the giraffes is more than 15 feet” what is the null hypothesis?

10. Use the following histogram to answer the question: ( same histogram as above)


<! Is the histogram Right Skewed, Left Skewed, or Neither? Explain your answer.

11.Use the following histogram to answer the question:


What is the mode of the histogram?


12.Calculate the mean, median, mode, range, and 5 Number Summary of the following data set:


5,6,8,4,7,5,4,2,5,6,5,2,1,4


13.Use the following histogram for the question:


How many hours of sleep were recorded with a frequency of 3?


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Explanation & Answer

Attached.

Surname 1
Name
Institution
Instructor
Date
Statistics
Question 1
Sample size = 230
Standard deviation = 0.04
Confidence level = 95%
Therefore = 230 * 0.04
Answer is = 9.2
Question 2
Sample size = 1000
Standard deviation = 0.04
Confidence level = 95%
Therefore = 1000 * 0.04
Answer is = 40
Question 3

Surname 2
Mean= sum of the data entry ÷ the number of the data entry
1+3+4+4+4+5+6+7+8+9+10+10+11+14+15+18+18+18+18+20 ÷ 20
= 203 ÷ 20
Answer is 10.15
Median: the middle en...


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