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A sample of 10 dips was selected. Assume that the population distribution of dips is normal. The weight of each dip was then recorded. The mean weight was 0.8 oz with a standard deviation of 0.1. The population stantard deviation is known to be 0.05 pounds.
1. Identify the following: x = σ= n=
2. Which distribution should you use for this problem?
3. Construct a 95% confidence interval for the population mean weight of dips. State the confidence interval and calcualte the error bound.
4. Construct a 92% confidence interval for the population mean weight of dips. State the confidence interval and calcualte the error bound.
5. By looking at the confidence interval calculated for question 3 and 4, give an interpretation of the difference by addressing error bound and sample size.
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