Cheyl Stake is concerned that too many forms are being filled out incorrectly. She feels that… 1 answer below »

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Cheyl Stake is concerned that too many forms are being filled out incorrectly. She feels that about 8 percent of all the forms have an error.

a. How large a sample size should Ms. Stake use to be 99 percent certain she will be within 0.02?

b. How large a sample size should Ms. Stake use to be 90 percent certain she will be within 0.02?

c. Explain the difference between parts a and b in words.

d. Suppose Ms. Stake will accept a confidence level of 95 percent that she will be within 0.02. What will the sample size of forms be now?