Student got results of 1200 962 1135 1038 and 989 Answer the

Student got results of 120.0, 96.2, 113.5, 103.8 and 98.9. Answer the following questions using the given results

a) Calculate the mean of the results

b) Calculate the Standard deviation

c) Find the 95% confidence interval for the mean (enter the margin of error only)

d) Using the G test, decide whether the number 96.2 should be discarded or not

Solution

a).Mean= 120.0+96.2+113.5+103.8 +98.9./ 5

= 106.48

b). Population size:5
Mean (?): 106.48

Standard deviation (?): 8.9709308324161

c). Confidence Interval: