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14 Dec 2021
Given information
It is thought that teenagers sleep more than adults on average. A study is done to verify this. A sample of teenagers has a mean of hours slept and a standard deviation of A sample of adults has a mean of hours slept and a standard deviation of
Step-by-step explanation
Step 1.
Let the average hours of sleep for teenagers be and that of adults be , then
The null hypothesis is given as follows:
The alternative hypothesis is as follows:
Therefore, this hypothesis test is for independent group means, population standard deviations, and or variances unknown.
Option .
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