SOLUTION: The distribution of study times for first year students follows a Normal distribution with standard deviation = 55 minutes. Suppose a sample of 341 students found that the mean st
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Question 1197942: The distribution of study times for first year students follows a Normal distribution with standard deviation = 55 minutes. Suppose a sample of 341 students found that the mean study time for these students was
= 189 minutes per week. Use this to find a 95% confidence interval to estimate the mean study time for all students.
We are 95% confident that the mean study time for first year students is between
______ minutes and _______ minutes. Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website!
95% confidence interval: z = 1.96 = 5.84
189 ± 5.84
We are 95% confident that the mean study time for first year students is between
183.16 minutes and 194.84 minutes.
Round as directed
