null hypothesis and alternative hypothesis

Chapter 10 Z-Test Input Output 1 pt Null Hypothesis Alternative Hypothesis elect from drop down) 0.00 Question 1 11 Points Sample Mean (x-bar) 3.40 Population Standard Deviati While these outputs aren't 1.45 Sample Size (n) "I graded, they should be used as I inputs for graded values below. i 45 The board of a major credit card company requires that the mean wait time for customers when they call customer service is 3 minutes. Alpha-level 0.02 To make sure that the mean wait time is not exceeding the requirement, an assistant manager tracks the wait times of 45 randomly selected calls. The mean wait time was calculated to be 3.4 minutes and the population standard deviation is 1.45 minutes. 11 1 pt Standard Error =1.45/SQRT(45) 0.2162 12 Question 1 13 1 pt z-Score =(3.4-3)/(1.45/SQRT(45)) 1.8505 Part 1: Screenshot 14 Perform a hypothesis test with an alpha level of 0.02. Then construct an appropriate confidence interval based on the alpha level and 15 1 pt p-value DIST (3.4, 3, 1.45/SQRT (45) , T 0.0321 16 alternative hypothesis. 1 pt Critical Value =NORM.S.INV(1-0.02) 2.0537 18 19 1 pt Margin of Error =G17*G11 0.4439 Part II: Conclusion 20 Based on your results for part I, either reject or fail to reject the null hypothesis, then explain what that means in context. Then, interpret 21 Lower Limit Upper Limit your interval in context and explain how your interval supports the decision to reject or fail to reject the null hypothesis. 22 1 pt Confidence Interval 2.9561 3.8439 23 24 25 Explain How Interval Explain Decision in Context 26 Correct Test Decision Interpret Interval in Context Supports Decision 27 28 1 pt 1 pt 1 pt 1 pt 30 31 32 33