5
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
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 answer 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