1. We are testing H0\" p1=p2 and HA: p1 doesnt equal p2 at 1% level of significa
ID: 3442498 • Letter: 1
Question
1. We are testing H0" p1=p2 and HA: p1 doesnt equal p2 at 1% level of significance of an attribute in two populations 1 and 2.
a. State the test statistic, the P_value, and your conclusion about rejecting or not rejecting the null hypothesis.
b. Compute a 99% confidence interval for p1=p2 and describe whether the information from this interval is consistent with the conclusion in the hypothesis test.
2. Explain the meaning of a type I error and a type II error.
3. We are going to test the null and the alternative hypotheses: H0:u=80 or HA: u>80 based on a simple random sample of size 50 and the population standard deviation of 20.
a. Compute the probability of a type II error if actually u=84
b. Compute the power of the test if ACTUALLY u=84
c. Compute the probability of a type II error if actually u=90
d. Compute the power of the test if u=90
Populatiom 1 Population 2 # with attribute 56 198 Sample Size 132 489Explanation / Answer
1. We are testing H0" p1=p2 and HA: p1 doesnt equal p2 at 1% level of significa
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