Suppose that in a sample of 4876customers at a food store, 2654food shop more than once a week. Find a 90% confidence interval for the population proportion of customers who shop more than once a...

Suppose that in a sample of 4876customers at a food store, 2654food shop more than once a week. Find a 90% confidence interval for the population proportion of customers who shop more than once a week. Interpret your answer.

b) A claim is made that 52% of all customers at a food store shop more than once a week. Using the results from part (a) of this problem, would this claim be valid or invalid?