Does the price paid for tuna depend on the packaging
Chapter 8, Problem 86E(choose chapter or problem)
Problem 86E
Does the price paid for tuna depend on the packaging method? Consumer Report gives the estimated average price for a 6-ounce can or a 7.06-ounce pouch of tuna based on price paid nationally in supermakets.15 The prices are recorded for a variety of different tuna brands in the following table:
Assume that the tuna brands included in the survey represent a random sample of all tuna brands available in the United States . Find a 95% confidence interval
a for the average price of light tuna packed in water. Interpret the interval. Specifically, what does the “95%” refer to?
b for the average price of light tuna packed in oil. How does the width of this interval. Compare to the interval found in part(a)? Give three reasons that the length of the intervals differ
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