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.
Since the sample mean is 23.6 and the 90% confidence interval is , the sketch of the graph of the confidence interval can be drawn as shown below:
Unlock all Textbook Solutions
Already have an account? Log in