statistical inferences

Project Description:

feasibility study: companies that sell groceries over the internet are called e-grocers. customers enter their orders, pay by credit card and receive delivery by truck. to determine whether an e-grocery would be profitable in one large city, a potential e-grocer offered the service and recorded the size of the order for a random sample of customers. the data are stored in the data file.
(i) estimate with 99% confidence the average order in the city.
(ii) financial analysis indicates that to be profitable the average order would have to exceed $50. can we infer from the data that an e-grocery will be profitable in the city? test using α = 0.01.
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Price Type: Negotiable

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