Question: A consumer survey indicates that the average household spends µ = $155 on groceries each week. The distribution of spending amounts is approximately normal with a standard deviation of σ = $25. Based on this distribution,

a. What proportion of the population spends more than $175 per week on groceries?

b. What is the probability of randomly selecting a family that spends less than $100 per week on groceries? c. How much money do you need to spend on groceries each week to be in the top 20% of the distribution?