A retailer believes that its new advertising strategy

Statistical InferenceA retailer believes that its new advertising strategy will increase sales. Previously, the mean spending in 15 categories of consumer items in both the 18-34 and 35+ age groups was $70.00. (For all hypothesis tests, assume the level of significance is 0.05).Formulate a hypothesis test to determine if the mean spending in these categories has statistically increased.After the new advertising campaign was launched, a marketing study found that the mean spending for 300 respondents in the 18-34 age groups was $75.86, with a standard deviation of $50.90. Is there sufficient evidence to conclude that the advertising strategy significantly increased sales in this age group?

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