Consumer Reports uses a 100-point customer satisfaction score to rate the nation's major chain stores. Assume that from past experience with the satisfaction rating score, apopulation standard deviation of a = 12 is expected. Costco with its 432 warehouses in 40 states was the only chain store to earn an outstanding rating for overall quality. A sample of15 Costco customer satisfaction scores is contained in the Excel Online file below. Construct a spreadsheet to answer the following questions.XOpen spreadsheeta. What is the sample mean customer satisfaction score for Costco (to 2 decimals)?b. What is the sample variance (to 2 decimals)?c. What is the sample standard deviation (to 2 decimals)?d. Construct a hypothesis test to determine whether the population standard deviation of a = 12 should be rejected for Costco.State the null and alternative hypotheses.Ho: 0²H₂ : 0²144Calculate the value of the test statistic (to 2 decimals).=144p-value isWith a .05 level of significance, what is your conclusion?The hypothesis that the population standard deviation is 12ŷ Excel template Saved5D2123456789 DINFile10111213141516171819202122232425262728293031วา។HomeASatisfactionScore949082749597808380958480976760=InsertDataArialX ✓ fxB+Draw Page LayoutPart aMeanPart bVariance✓10Part cStandard DeviationPart dDegrees of FreedomсCalculation Mode: Automatic Workbook StatisticsBFormulasHypothesized Standard DeviationChi Square Test StatisticsLower-Tail p-valueUpper-Tail p-valueTwo-Tail p-valueSignificance Level (alpha)Can the hypothesis that the populationstandard deviation is 12 be rejected? (Enter"Can be rejected" or "Cannot be rejected")Search (Option + Q)DataDReview120.05ViewVEabFormulaHelpNumberF#N/A#N/A#N/A#N/A#N/A#N/A#N/A#N/A#N/A>←0.00.00→.0▬▬▬▬iGVH1ΣvJEditingATVKGive Feedback to MicrosoftLComments-M100% +

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Consumer Reports uses a 100-point customer satisfaction score to rate the nation's major chain stores. Assume that from past experience with the satisfac population standard deviation of a = 12 is expected. Costco with its 432 warehouses in 40 states was the only chain store to earn an outstanding rating fo 15 Costco customer satisfaction scores is contained in the Excel Online file below. Construct a spreadsheet to answer the following questions. Open spreadsheet a. What is the sample mean customer satisfaction score for Costco (to 2 decimals)? b. What is the sample variance (to 2 decimals)? c. What is the sample standard deviation (to 2 decimals)? d. Construct a hypothesis test to determine whether the population standard deviation of 12 should be rejected for Costco. State the null and alternative hypotheses. Hoo² = 144 H₂:0² Ⓒ144 Calculate the value of the test statistic (to 2 decimals). p-value is With F

Consumer Reports uses a 100-point customer satisfaction score to rate the nation's major chain stores. Assume that from past experience with the satisfac population standard deviation of a = 12 is expected. Costco with its 432 warehouses in 40 states was the only chain store to earn an outstanding rating fo 15 Costco customer satisfaction scores is contained in the Excel Online file below. Construct a spreadsheet to answer the following questions. Open spreadsheet a. What is the sample mean customer satisfaction score for Costco (to 2 decimals)? b. What is the sample variance (to 2 decimals)? c. What is the sample standard deviation (to 2 decimals)? d. Construct a hypothesis test to determine whether the population standard deviation of 12 should be rejected for Costco. State the null and alternative hypotheses. Hoo² = 144 H₂:0² Ⓒ144 Calculate the value of the test statistic (to 2 decimals). p-value is With F

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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