Textbook ExpertVerified Tutor
16 Nov 2021
Given information
Sample size is n=70. Sample standard deviation is 0.5 hours and sample mean is 1.5 hours.
Step-by-step explanation
Step 1.
Notice from the given information that the population standard deviation is unknown. In the absence of knowledge of the population standard deviation, it is preferable to use the Student's t-distribution instead of the Normal distribution.
Unlock all Textbook Solutions
Already have an account? Log in