Let p denote the proportion of individuals in the population are left-handed. Researchers randomly selected 1091 individuals from the population and it was found that 101 indivividuals in the sample were left handed. They want to test, at the 5% level of significance, whether the proportion of individuals that are left-handed is not equal to 0.08. Assume the assumptions in this hypothesis test are satisifed. d) What is the observed test statistiv for hypothesis test? e) What is the correcr conclusion for hypothesis test? Since the observed test statistic is inside the rejection region we reject H0 at the 5% level of signficance Since the observed test statistic is inside the rejection region we do not reject H0 at the 5% level of signficance Since the observed test statistic is outside the rejection region we reject H0 at the 5% level of signficance Since the observed test statistic is outside the rejection region we do not reject H0 at the 5% level of signficance f) Suppose other researchers want to estimate p using a confidence interval. How many individuals in the population do they need to sample, to estimate p to within 0.02 and with 98% confidence
Let p denote the proportion of individuals in the population are left-handed. Researchers randomly selected 1091 individuals from the population and it was found that 101 indivividuals in the sample were left handed. They want to test, at the 5% level of significance, whether the proportion of individuals that are left-handed is not equal to 0.08. Assume the assumptions in this hypothesis test are satisifed.
d) What is the observed test statistiv for hypothesis test?
e) What is the correcr conclusion for hypothesis test?
Since the observed test statistic is inside the rejection region we reject H0 at the 5% level of signficance
Since the observed test statistic is inside the rejection region we do not reject H0 at the 5% level of signficance
Since the observed test statistic is outside the rejection region we reject H0 at the 5% level of signficance
Since the observed test statistic is outside the rejection region we do not reject H0 at the 5% level of signficance
f) Suppose other researchers want to estimate p using a confidence interval. How many individuals in the population do they need to sample, to estimate p to within 0.02 and with 98% confidence
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