Can you assist me with these three questions please?
Ho : / = 80 Ha : H # 80 A sample of 90 is used. Identify the p-value and state your conclusion for each of the following sample results. Use a = 0.02. Round the value of the test statistic to three decimal places. If required enter negative values as negative numbers. a. I = 83 and s = 11 t-value p-value - Select your answer - conclusion - Select your answer - o] Ho b. T = 76.5 and s = 10.5 t-value p-value - Select your answer - o conclusion - Select your answer - o Ho c. I = 84 and 8 = 11.5 t-value p-value - Select your answer - 0 conclusion - Select your answer - o Ho Video O Duke Energy reported that the cost of electricity for an efficient home in a particular neighborhood of Cincinnati, Ohio, was $103 per month (Home Energy Report, Duke Energy, March, 2012). A researcher believes that the cost of electricity for a comparable neighborhood in Chicago, Illinois, is higher. A sample of homes in this Chicago neighborhood will be taken and the sample mean monthly cost of electricity will be used to test the following null and alternative hypotheses. Ho: US $103 Ha: W > $103 a. Assume the sample data lead to rejection of the null hypothesis. What would be your conclusion about the cost of electricity in the Chicago neighborhood? Select b. What is the Type I error in this situation? The Type I error is rejecting Ho when it is true What are the consequences of making this error? A type I error is Select the null hypothesis and assuming Chicago Select o electricity costs than Cincinnati, when in fact it Select electricity costs than Cincinnati. c. What is the Type II error in this situation? The Type II error is - Select your answer - ] H o when it is [- Select your answer - ] . What are the consequences of making this error? A type II error is Select the null hypothesis and assuming Chicago |Select electricity costs than Cincinnati, when in fact it Select electricity costs than Cincinnati. ent: Chapter 9 Assignment Assignment Score: 0.00% Save Submit Assignment for Grading ns Question 3 of 6 Check My Work (1 remaining) Because of high production-changeover time and costs, a director of manufacturing must convince management that a proposed manufacturing method reduces costs before the new method can be implemented. The current production method operates with a mean cost of $215 per hour. A research study will measure the cost of the new method over a sample production period. a. Develop the null and alternative hypotheses most appropriate for this study. Ho: / - Select your answer - 0 215 Ha: / - Select your answer - 0 215 b. Comment on the conclusion when Ho cannot be rejected. We - Select your answer - o] conclude that the new method reduces costs. c. Comment on the conclusion when Ho can be rejected. Consider implementing the new method based on the conclusion that it | - Select your answer - o ] the mean cost per hour
