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It is estimated that 12% of those taking the quantitative methods portion of the certified public...

It is estimated that 12% of those taking the quantitative methods portion of the certified public accountant (CPA) examination fail that section. Sixty six students are taking the examination this Saturday.

  

a-1. How many would you expect to fail? (Round the final answer to 2 decimal places.)

Number of students           

a-2. What is the standard deviation? (Round the final answer to 2 decimal places.)

Standard deviation           

b. What is the probability that exactly four students will fail? (Round the final answer to 4 decimal places.)

Probability           

c. What is the probability at least four students will fail? (Round the final answer to 4 decimal places.)

Probability           

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