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Question 9 (1 point) The heights of adult males in the United States are approximately normally distributed. The mean height is 70 inches (5 feet 10 inches) and the standard deviation is 3 inches. Use the table to estimate the probability that a randomly-selected male is more than 74.5 inches tall. Express your answer as a decimal. Z -2.5 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 2.5 Area 0.01 0.02 0.07 |0.31 0.5 0.69 0.84 0.93 0.98 |0.99 O a 0.83 Ob 0.07 O c 0.93 Od 0.5 Question 10 (1 point) Match the sample of students with the correct sampling method: every twentieth student on the class list self-selected Ob random O c convenience O d systematic Question 11 (1 point) A manufacturer finds that the life expectancy of its best-selling model of dishwashers is normally distributed. The mean is 11 years and the standard deviation is 1 year. What percent of dishwasher models will last from 9 to 11 years? About 959% Ob About 99.79% C About 47.59% Od About 689%