Answer Happy

Step 4 Thus, we have the test statistic z = -2.74. Next, we determine the rejection region. Recall that the rejection region for a one-tailed test is z > Zor z <-z, depending on the form of the alternative hypothesis, where z is the positive z-value corresponding to a right-tail area of a. We have that the null and alternative hypotheses are Ho: #= 76 versus H₁: # < 76. From part (b), we are conducting a one-tailed test and the null hypothesis will be rejected if the value of x is much smaller than 76, so the rejection region is located in the left ✔✔✔tail of a standard normal curve. Therefore, the rejection region is of the following form. OZ>Za Oz<-Z₂ We want to use a significance level of a = 0.05. Using Table 3 in the appendix or technology, the positive z-value for a right-tail area of = 0.05, rounded to two decimal places, is Z₂ = 2912 X State the rejection region for the given one-tailed hypothesis test, Ho: 76 versus H₂: < 76 with = 0.05, rounding to two decimal places and entering NONE for the unused region. Z> Submit Skip (you cannot come back)