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10% of American adults are left-handed. A statistics class has 150 students in attendance. a. Determine...

10% of American adults are left-handed. A statistics class has 150 students in attendance. a. Determine the probability that exactly 7 students will be left-handed. b. Find the mean and standard deviation. c. Determine the probability that at most 15 students will be left-handed d. Is it usual to have 5 left-handed students in the statistics class? Justify your answer.

Math   Statistics-And-Probability   
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(I have rounded the answers to 4 decimal places. Please round them to the required number of decimal places.)

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