Answered step by step
Verified Expert Solution
Question
1 Approved Answer
A manager of a computer chip production plant believes that a two-day training class helps reduce the number of products that an employee breaks during
A manager of a computer chip production plant believes that a two-day training class helps reduce the number of products that an employee breaks during the assembly process. She randomly selects seven senior employees to receive the training. She collects data on the number of computer chips they break per week before the training and then measures the same thing for the week after the training. The standard deviation of the difference is 5.57. Assume that computer chip breaking is normally distributed because of the limited sample size. The data collected is included in the table below: Worker Computer Chips Broken Before Training Computer Chips Broken After Training Miriam 21 14 Zachary 25 17 Melinda 22 23 Katie 31 20 Rafael 27 30 Adam 20 19 Nour 1O 12 Which of the following would be the correct alternative hypothesis to test the manager's claim that the training reduces the number of broken computer chips? O The training has no impact on the number of broken computer chips, on average, or M Difference = 0. O The training always reduces the number of broken computer chips or /Difference 0. O The training has some impact on the number of broken computer chips, on average, or /Difference # 0.Calculate the average of the differences (51) using an after-minus-before approach (shown in class). Hound your answer to 2 decimals and use the minus sign (-) for a negative answer. A manager of a computer chip production plant believes that a two-day training class helps reduce the number of products that an employee breaks during the assembly process. She randomly selects seven senior employees to receive the training. She collects data on the number of computer chips they break per week before the training and then measures the same thing for the week after the training. The standard deviation of the difference is 5.57. Assume that computer chip breaking is normally distributed because of the limited sample size. The data collected is included in the table below: Worker Computer Chips Broken Before Training Computer Chips Broken After Training Miriam 21 14 Zachary 25 17 Melinda 22 23 Katie 31 20 Rafael 27 30 Adam 20 19 Nour 10 12 Calculate the appropriate test statistic needed to test your claim. Round your final answer to 2 decimals. Hint, make sure you are using the correct formula based on the information given in the problem and use the minus sign (-) for a negative answer.Find and enter the absolute value of the correct critical value needed to test your claim at the 5% significance level. Use the tables given to you in class and use the exact answer from the table. Hint, the things you will need to know include alpha, d is this a one or two-tailed test, and which table to use! Use your calculated test statistic and the appropriate table to find the correct range for the p-value for the specified test. Hint, the things you will need to know include alpha, df, is this a one or two-tailed test, and which table to use! O p-value 0.20Using either the critical value or pvalue approach, which of the following would be the correct finding from your test? 0 We will Eject the null hypothesis and thus can conclude that the training reduces the average number of broken computer chips. 0 We will Eject the null hypothesis and thus cannot conclude that the training reduces the average number of broken computer chips. 0 We will fail to reject the null hypothesis and thus cannot conclude that the training reduces the average number of broken computer chips. 0 We will fail to reject the null hypothesis and thus can conclude that the training reduces the average number of broken computer chips
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started