a. Give the symbolic form that must be true when the original claim is false. The alternative (in symbolic form) to the original claim is.
b. Identify the significance level.
c. Use the formula shown below to find the test statistic, z.
d. Find N1, N2, and the value of each.
e. Find x1 and x2 and the value of each.
f. Calculate p1 and p2, the sample proportion for each.
g. Calculate the pooled sample proportion.
h. Calculate q, the complement of p, and q^2.
i. Determine the test statistic, z.
j. Calculate the critical values.
k. Reject H0 if the test statistic is in the critical region. Fail to reject H0 if the test statistic is not in the critical region.
Two different simple random samples are drawn from two different populations. The first sample consists of 20 people, with 11 having a common attribute. The second sample consists of 25 people, with 15 having the same attribute. Find the 95% confidence interval estimate of the difference between the proportions p1 and p2.
What are the null and alternative hypotheses for the hypothesis test?
a. Ho: p1 = p2
b. Ha: p1 ≠ p2