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Although studies continue to show smoking leads to significant health problems, 20% of adults in the...

Although studies continue to show smoking leads to significant health problems, 20% of adults in the United States smoke. Consider a group of 300 adults. If required, round your answers to four decimal places. Use Table 1 in Appendix B. If your answer is zero, enter "0".

a. What is the expected number of adults who smoke?

b. What is the probability that fewer than 30 smoke? Used continuity correction factor.

c. What is the probability that from 45 to 70 smoke? Used continuity correction factor.

d. What is the probability that 90 or more smoke? Used continuity correction factor.

Math   Statistics-And-Probability   
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