SOLUTION: A statistics practitioner wants to test the following hypotheses:
H^0: p=.70
H^1: p>.70
A random sample of 100 produced p=.67
Calculate the p-value of the test.
b).Re
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Question 923889: A statistics practitioner wants to test the following hypotheses:
H^0: p=.70
H^1: p>.70
A random sample of 100 produced p=.67
Calculate the p-value of the test.
b).Repeat part (a) with p=.68
C).Repeat part (a) with p=.69
D).Describe the effect on the z-statistic and its p-value of increasing the sample proportion.
Answer by ewatrrr(24785) (Show Source): You can put this solution on YOUR website!
Ho: p=.70
Ha: p > .70
....
A random sample of 100 produced p=.67
= -.03/.0458 = -.6547
Using TI or Similarly Your Casio fx-115 ES plus
p-value = P(z > -.6547) = normalcdf(-.6547, 100) = .7437
..........
= -.02/.0458 = -.4364
p-value = P(z > -.4364) = normalcdf(-.4364, 100) = .6687
.........
= -.01/.0458 = -.2183
p-value = P(z > -.2183) = normalcdf(-.2183, 100) = .5864
.........
increasing the sample proportion , increases the z -value (-.2183 > -.6547)
and decreases the probability of that sample proportion
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