According to a government study among adults in the 25- to 34-year age group, th

Question

According to a government study among adults in the 25- to 34-year age group, the mean amount spent per year on reading and entertainment is $1,994. Assume that the distribution of the amounts spent follows the normal distribution with a standard deviation of $450. Refer to the table in Appendix A.1. (Round z-score computation to 2 decimal places and your final answer to 2 decimal places. Omit the "%" sign in your response.) a. What percent of the adults spend more than $2,500 per year on reading and entertainment? Percent % b. What percent spend between $2,500 and $3,000 per year on reading and entertainment? Percent % c. What percent spend less than $1,000 per year on reading and entertainment? Percent %

Explanation / Answer

1. p(x) > 2500 = p[z > (2500-1994) / 450)] = p(z) > 1.1244 = 0.1304; 13.04 percent 2. p(2500

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