In a 2014 survey conducted by the Saint Leo University Polling Institute, a rand

Question

In a 2014 survey conducted by the Saint Leo University Polling Institute, a random sample of 1,009 adults were asked if they participated in a March Madness NCAA basketball tournament pool for money. Among those polled, 198 admitted that they participated in such a pool.

a)What proportion of these people said that they participated in a March Madness pool?

b)Is this number a parameter or a statistic? Explain clearly in one sentence.

c)Suppose the actual percentage of adults who participated in a March Madness pool for money in 2014 was 40%. Do you suspect that the difference between this value and the proportion in part (a) is just the result of random sampling or might there be an alternative explanation for this difference? Explain your reasoning clearly in a sentence or two.

Explanation / Answer

a)point estimate of proportion p=198/1009 =0.1962

b) it is statistic; as based on sample not on population

c)In addition to samlpling error , this could happen becuase the people who responded may not given true reply .

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