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Distribution of spending amounts with standard deviation

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A consumer survey indicates that the average household spends m=$155 on groceries each week. The distribution of spending amounts is normal with a standard deviation of o=$25. Based on this distribution

a) What proportion of the population spends more than $150 per week on groceries?

b) What is the probability of randomly selecting a family that spends less than $110 per week?

c) How much money do you need to spend each week to be in the top 10% of spenders?

Reference no: EM1393160

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