Question Help A study was conducted to see if people who use the Internet have a

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Question Help A study was conducted to see if people who use the Internet have also paid to download music. In a representative sample of 738 adults who use the Internet, 482 admitted that they have paid to download music. Let p represent the true proportion of all Intemet-using adults who have paid to download music. Complete parts a hrough g below. a. Compute a point estimate of p. The point estimate of p is(Round totwo decimal places as needed.) b. Set up the null and altenative hypotheses for testing whether the true proportion of all Internet-using adults who have paid to download music exceeds 0.7 What are the hypotheses for this test? A. Ho: p 0.7 H, p50.7 H": p . 0.7 D. Ho:p.07 H.:p#0.7 OF Hoip 0.7 H p 07 c. Compute the test statistic for part b. e, z-O(Round to two decimal places as needed.) al,d. Find the rejection region for the test if a -0.05.Select the correct choice below and filli the answer box(es) to complete your choice he Round to three decimal places as needed.) Click to select your answerls).

Explanation / Answer

Ans:

a)

point estimate=482/738=0.65

b)Option F is correct.

c)Test statistic:

z=(0.65-0.7)/sqrt(0.7*(1-0.7)/738)

z=-2.96*

*(if exact point estmate value is taken,then z=-2.78 and if 0.65 is taken,z=-2.96)

d)critical z value=1.645

z>1.645

option C is correct.

e)p-value=P(z>-2.96)=0.998

f)Do not reject null hypothesis because test statistic does not fall in rejection region.There is insufficient evidence at the 0.05 level of significance......

g)Do not reject the null hypothesis because the p-value is greater than 0.05.There is insufficient evidence to indicate

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