B repeat part a using samples of size n 20 the

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(b) Repeat part (a) using samples of size n = 20.
(c) Repeat part (a) using samples of size n = 50.
(d) Use your answers to parts (a), (b), and (c) to comment on the effect of increasing the samplesize on the accuracy of using a sample proportion to estimate the population proportion.
3.52 Employer-Based Health Insurance A report from a Gallup poll22 in 2011 started bysaying,????Forty-five percent of American adults reported getting their health insurance froman employer. . . ??Later in the article we find information on the sampling method, ????arandom sample of 147,291 adults, aged 18 and over, living in the US,?? and a sentence aboutthe accuracy of the results, ????the maximum margin of sampling error is ??1 percentage
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(a) What is the population?What is the sample?What is the population parameter ofinterest? What is the relevant statistic?
(b) Use the margin of error to give an interval estimate for the parameter of interest. Interpretit in terms of getting health insurance from an employer.
3.54Number of Text Messages a DayA random sample of n = 755 US cell phone users age18 and older in May 2011 found that the average number of text messages sent or receivedper day is 41.5 messages,25 with standard error about 6.1.(a) State the population and parameter of interest. Use the information from the sample togive the best estimate of the population parameter.

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