Ch9. 7. Pharmaceutical companies promote their prescription drugs using television advertising. In a survey of 70 random

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Ch9. 7. Pharmaceutical companies promote their prescription drugs using television advertising. In a survey of 70 random

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Ch9. 7.
Pharmaceutical companies promote their prescription drugs usingtelevision advertising. In a survey of 70 randomly sampledtelevision viewers, 7 indicated that they asked their physicianabout using a prescription drug they saw advertised on TV.a. What is the point estimate of thepopulation proportion? (Round your answers to 1decimal places.)
b. What is the margin of error for a 90%confidence interval estimate? (Round your answers to 2decimal places.)
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