Textbook ExpertVerified Tutor
12 Nov 2021
Given information
The sample size is 100. The sample mean and sample standard deviation is 23.6 and 7 hours respectively. The population is normally distributed.
From the previous task, the 90% confidence interval for the population mean is found to be:
Step-by-step explanation
Step 1.
The error bound is equal to half the difference between the upper and lower limit of the confidence interval:
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