b) A poll showed the approval rating to be 0.47 (47%). A second poll based on 2500 randomly selected voters showed that 1240 approved of the job the president was doing. Do the results of the second poll indicate that the proportion of voters who approve of the job the president is doing is significantly higher than the originallevel? Explain. Assume the =0.1 level of significance.

Identify the null and alternative hypotheses for this test.

A.

H0: p=0.47

H1: p>0.47

Your answer is correct.

Find the test statistic for this hypothesis test. (round two decimal points)

Z=

Determine P value= (round three decimal points)

Can these be calculated in STAT crunch?