Question 1) Twenty percent of all persons prefer strawberry to chocolate ice cream. The probability that less than 18% of persons in a sample of 1000 will choose strawberry over chocolate ice cream is approximately: 28.

Question 2)Ten percent of all persons are allergic to penicillin. The probability that less than 8% of persons in a sample of 1000 will be allergic to penicillin is approximately: 29.

Question 3:Ten percent of all persons are allergic to penicillin. The probability that more than 8% of persons in a sample of 1000 will be allergic to penicillin is approximately: 30.

Question 4:Twenty percent of all adult males did not visit their physicians' offices last year. The probability that less than 23% of adult males in a sample of 800 did not visit their physicians' offices last year is approximately:

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