why it is more relevant: te the tallest passengers.
5 points
Based on a Harris poll, \( 20 \% \) of adults smoke. If two adults are randomly selected, what is the probability that they both smoke?
Do not round your answer. Enter a decimal (not a percent).
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\( 6 \quad 5 \) points
There are 100 questions from an SAT test, and they are all multiple choice with possible answers of a, b, c, d, e. For each question, only one answe correct. Find the mean number of correct answers for those who make random guesses for all 100 questions.
Do not round your answer.
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7 5 points
Consider that \( 40 \% \) of the population has brown eyes. If six people are randomly selected, find the probability that none of them has brown eyes. Round your answer to 3 decimal places.
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8
5 points
The Mark VI monorail used at Disney World has doors with a height of \( 72 \mathrm{in} \). Heights of men are normally distributed with a mean of \( 69.5 \mathrm{in} \). and standard deviation of 2.4 in. What percentage of adult men can fit through the doors without bending? Does the door design ......a neight of?