Decline in spending on movie concessions

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In the past, patrons of a cinema complex have spent an average of $5.00 for popcorn and other snacks, with a standard deviation of $1.80. The amounts of these expenditures have been normally distributed. Following an intensive publicity campaign by a local medical society aimed at decreasing soda and unhealthy snack consumption, the mean expenditure for a sample of 18 patrons is found to be $4.40. Does the sample data suggest a decline in spending on movie concessions at the significance level of α = 0.05?

Reference no: EM132495171

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