Question1: Describe the data you collected and how you collected it. (5 points)

I collected ages by asking family and friends "How old are you (in years)?".

Question 2: Submit your data below. (10 points)

16

18

18

20

20

21

21

21

22

22

24

26

32

32

33

33

33

36

38

39

44

50

52

54

54

56

60

61

61

79

Question 3: Find the following summary statistics:(round to 2 decimal places) (6 pts)

Mean: ______________________

Standard Deviation: _____________________

Question 4: (10 points)

Using your data, find an interesting proportion and calculate that proportion of your data. For example, suppose your data is 30 responses of the weights of new born babies. Your proportion could be the proportion of babies born in the normal range. You would have to research what normal range was and determine the percentage of your data that falls into this range. Find a confidence Interval for some proportion of your data. Make sure you explain the proportion and find the value of . Show all your work or the calculator function including syntax you used.

Question 5:(10 points)

Find a confidence interval for the mean of your data. Make sure you show all your work or the calculator function including syntax you used.

Question 6:(10 points)

Find a confidence interval for the standard deviation of your data. Make sure you show all your work.

Question 7: (10 points)

What is the purpose of the confidence interval?

Question 8:

What information did the confidence intervals in questions 3, 4, 5 tell you about your data?