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DQuestion 8 1 pts Letand y be the means of random samples of sizes m14 and n 20 from the respective normal distributions N(uiA) and N(u2,0 ), where it is known that ơ-17 and σ1-23 When the alternative hypothesis is H,: μ.> μ2, the rejection region of your test at level α = 0.01 is z > ( ) (round off to second decimal place). DQuestion9 1 pts Independent random samples are selected from two populations. The summary statistics are given below. Assume unequal variances for the following questions. m 6, -14.7, 13.4 n-9, -12.9, 2.5 Test if the mean of the first population is larger than that of the second population. What is the p- value (round off to second decimal place)? Question 10 1 pts A college prep program compared the practice SAT math scores given before and after a seven-week instruction for each student. The scores are given below. Student 4. 520 490 670 550 570 690 Before 750 800500 After 780 800 550 410 440 600 440 480 700 Test if the average score has been raised by more than 30 points with a 0.1. Assume normal population O do not reject Ho O reject Ho

Answer 1

my dear student you posted multiple questions as per HOMEWORKLIB RULES I have solved the first one question Thank you.