6) According to the International Journal of Retail and Distribution Management (Vol. 39, 2011) survey of Black Friday shoppers. One question was “How many hours do you usually spend shopping on Black Friday?” What size sample would be required to estimate the population mean number of hours spent shopping on Black Friday if you want the estimate to be within 0.5 hours at the 99% confidence interval, given a population standard deviation of 2.72 hours. 7) Suppose that in a sample of 5274 customers at a food store, 2468 food shop more than once a week. Find a 98% confidence interval for the population proportion of customers who shop more than once a week. Interpret your answer. b) If in the above scenario, a claim is made that 40% of customers at a food store shop more than once a week. Would thi
6) According to the International Journal of Retail and Distribution Management (Vol. 39, 2011) survey of Black Friday shoppers. One question was “How many hours do you usually spend shopping on Black Friday?” What size sample would be required to estimate the population mean number of hours spent shopping on Black Friday if you want the estimate to be within 0.5 hours at the 99% confidence interval, given a population standard deviation of 2.72 hours.
7) Suppose that in a sample of 5274 customers at a food store, 2468 food shop more than once a week. Find a 98% confidence interval for the population proportion of customers who shop more than once a week. Interpret your answer.
b) If in the above scenario, a claim is made that 40% of customers at a food store shop more than once a week. Would thi
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