The test statistic of z=−2.80 is obtained when testing the claim that p<0.47. a. Using a significance level of α=0.05, find the critical value(s). b. Should we reject H0 or should we fail to reject H0?
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The test statistic of z=−2.80 is obtained when testing the claim that p<0.47.
a. Using a significance level of α=0.05, find the critical value(s).
b. Should we reject H0 or should we fail to reject H0?
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- The test statistic ofz=−1.58 is obtained when testing the claim that p =3/5. a. Using a significance level of α= 0.05, find the critical value(s). b. Should we reject H0 or should we fail to reject H0?Only about 15% of all people can wiggle their ears. Is this percent different for millionaires? Of the 726 millionaires surveyed, 137 could wiggle their ears. What can be concluded at the 0.05 level of significance? H0: p = 0.15 Ha: p [ Select ] [">", "Not Equal To", "<"] 0.15 Test statistic: [ Select ] ["Z", "T"] p-Value = [ Select ] ["0.07", "0.007", "0.14", "0.004"] [ Select ] ["Fail To Reject Ho", "Reject Ho"] Conclusion: There is [ Select ] ["statistically significant", "insufficient"] evidence to make the conclusion that the population proportion of all millionaires who can wiggle their ears is not equal to 0.15. I NEED THE LAST THREE.The test statistic of z=−2.31 is obtained when testing the claim that p=1/2. a. Using a significance level of α=0.05,find the critical value(s). b. Should we reject H0 or should we fail to reject H0?