The data below refers to the time in hours spent on mobile internet by sample of 10 students in a class. 39 42 47 45 32 45 37 34 33 29 assume that the population data follows a normal distribution with unknown mean and unknown standard deviation. find a 95% confidence interval estimate of μ . [33.813, 42.787] hours [35.557, 41.936] hours [34.664, 41.936] hours

Option A) (33.813,42.787)

Step-by-step explanation:

We are given the following data set:

39, 42, 47, 45, 32, 45, 37, 34, 33, 29

Sample size, n = 10

Formula:

where are data points, is the mean and n is the number of observations.  

Sum of squares of differences = 354.1

95% Confidence interval:  

Putting the values, we get,  

16.9 times 2.85

step-by-step explanation:

i think the answer is b.

step-by-step explanation:

not 100% sure though.