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QUESTION 23 A manufacturer of game controllers is concerned that their controller may be difcult for left-handed users. They set out to nd lefties to
QUESTION 23 A manufacturer of game controllers is concerned that their controller may be difcult for left-handed users. They set out to nd lefties to test. About 13% of the population is left-handed. If they select a sample of five customers at random in their stores, what is the probability that the first lefty is the fth person chosen. Enter your answer as a decimal to 4 decimal places. For example, 0. 0925 should be entered as 0.0925. QUESTION 24 An Olympic archer is able to hit the bull's-eye 80% of the time. Assume each shot is independent of the others. if she shoots 6 arrows, what's the probability of she gets at least 4 bull's eye? Enter your answer as a decimal to 4 decimal places. For example, 0.0925 should be entered as 0.0925. QUESTION 25 A survey of 100 randomly selected customers found the following ages (in years): The mean was 31.84 years, and the standard deviation was 9.84 years. What is the standard error of the mean? Enter your answer as a decimal to 4 decimal places. For example, 0.0925 should be entered as 0. 0925
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