Textbook ExpertVerified Tutor
12 Nov 2021
Given information
A sample of small bags of the same brand of candies was selected. Assume that the population distribution of bag weights is normal. The weight of each bag was then recorded. The mean weight was two ounces with a standard deviation of ounces. The population standard deviation is known to be ounce.
Step-by-step explanation
Step 1.
As we all know that Error bound E is calculated as
For a confidence interval, the two tailed critical z value is . The population standard deviation is estimated to be equal to the sample standard deviation and the sample size is .
Therefore, it follows:
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