Dear tutor kindly help me your help will be appreciated Historical data indicate that the standard deviation of a process is 6.7.a. A recent sample of size 28 produced a variance of 66.5. Test to determine if the variance has increased using a significance level of 0.05.b. A recent sample of size 7 produced a variance of 8.48. Test to determine if the variance has decreased using a significance level of 0.025.C. A recent sample of size 15 produced a variance of 61.6. Test to determine if the variance has changed using a significance level of 0.10.Because x isV the rejection region,the null hypothesis andthat the variance of the process hasb. Formulate the null and alternative hypotheses.(Type integers or decimals. Do not round.)O A. Ho: o?HA: o2 =O B. Ho: osO D. Ho: oHA: o?<O C. Ho: o? =Construct the rejection region and define the decision rule.(Round to two decimal places as needed.)O A. If>xo0125 -. or if x? xo 025 *9875, reject the null hypothesis.reject the null hypothesis.reject the null hypothesis.Compute the test statistic.(Round to two decimal places as needed.)Reach a decision and draw a conclusion.V the null hypothesis andV that the variance of the process hasBecause y isthe rejection region,c. Formulate the null and alternative hypotheses.(Type integers or decimals. Do not round.)O B. Ho: o2OA. Ho: o2#-2 -Click to select your answer(s).

Name: Dear tutor kindly help me your help will be appreciated Historical dat
Uploaded: 2024-03-20T06:46:03.000Z
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Description: Dear tutor kindly help me your help will be appreciated Historical data indicate that the standard deviation of a process is 6.7.a. A recent sample of size 28 produced a variance of 66.5. Test to determine if the variance has increased using a signif