The death rate per 100,000 for coronary thrombosis is 422 among nonsmokers and 599 among smokers. The prevalence of smoking in the population is 55%. Calculate the relative risk of dying from coronary thrombosis for a smoker compared to a nonsmoker.

An assortment of coins contains 14 pennies, 16 nickels, 9 dimes, and 11 quarters. To three significant figures, calculate the percentage of coins that have a face value of $0.05 or less.

An entertainment company surveyed 360 elementary school children and found that 153 of them idolized at least one professional wrestler. Obtain a point estimate for the proportion of all elementary school children who idolize at least one professional wrestler. Express your answer as a percentage rounded to one decimal place as needed.

An item with a price relative of 132 cost $10.75 in 2011. Its base year was 1994.a. What was the percentage increase or decrease in cost of the item over the 17-year period?b. What did the item cost in 1994?