4) A firm would like to estimate the mean age of all people in the civilian labor force. What sizesample would be required to estimate the mean age of all people in the civilian labor force accurateto within 0.75 year of the estimate at the 95% confidence level, given that o = 15.26 years? 2) High blood pressure has been identified as a risk factor for heart attacks and strokes. Theproportion of U.S. adults with high blood pressure is 0.3. A sample of 81 U.S. adults is chosen.a) What is the sampling distribution of ?p°b) Find the probability that the proportion of individuals in the sample who have high bloodpressure is between 0.24 and 0.35.c) Find the probability that less than 26% of the people in the sample have high blood pressure.d) Find the probability that more than 28% of the people in the sample have high blood pressure.e) Would it be unusual if more than 31% of the individuals in the sample of 81 had high bloodpressure? Explain.

Name: 4) A firm would like to estimate the mean age of all people in the ci
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Description: 4) A firm would like to estimate the mean age of all people in the civilian labor force. What sizesample would be required to estimate the mean age of all people in the civilian labor force accurateto within 0.75 year of the estimate at the 95% conf

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4) A firm would like to estimate the mean age of all people in the civilian labor force. What size sample would be required to estimate the mean age of all people in the civilian labor force accurate to within 0.75 year of the estimate at the 95% confidence level, given that o = 15.26 years?