Some fast-food chains offer a lower-priced combination meal in an effort to attract budget-conscious customers. One chain

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Some fast-food chains offer a lower-priced combination meal in an effort to attract budget-conscious customers. One chain test-marketed a burger fries and a drink combination for $1.71. The weekly sales volume for these meals was impressive. Suppose the chain wants to estimate the average amount its customers spent on a meal at their restaurant while this combination offer was in effect. An analyst gathers data from 28 randomly selected customers. The following data represent the sample meal totals.


Some fast-food chains offer a lower-priced combination meal in a


Use these data to construct a 90% confidence interval to estimate the population means value. Assume the amounts spent are normallydistributed.

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