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% +

Answered: Image /qna-images/answer/328e506c-5c28-415f-b987-4cad7d3e1efa.jpg

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

See similar textbooks

Similar questions

The following set of data represents the number of orders filled by a national-chain restaurant during a two week period. Construct a five number summary for the the data. 66, 75, 68, 89, 86, 73, 67, 75, 75, 82, 85, 74, 67, 61 (Round to the nearest hundredth, if needed). Min _________________ Lower Quartile _________________ Median __________________ Upper Quartile _________________ Maximum __________________ What is the range and the interquartile range (IQR)? Range __________________ Interquartile Range (IQR) ___________________
Consider the following data: 2, 9, 5, 11, 7, 3. a. Calculate its mean and variance. b. If all the above data was multiplied by 4, what would the new mean and variancebe?
Define the following terms and write down their formulas ? Statistics, Primary data, secondary data, Population, sample, discrete and continuous variables, Mean, Median, Quartile Mode, Geometric mean and harmonic mean
The following refer to the following data set: 20 28 44 92 64 48 68 43 86 43 What is the mean (7) of this data set? mean = (Please show your answer to one decimal place.) What is the median of this data set? median = %3D What is the mode of this data set? mode = %3D
The following data that belongs to a population: 4 -5 2 0 -10 14 12 8 Calculate the mean, median and mode. Round your answer to two decimal places if it is necessary Mean= Median= Mode=
The following refer to the following data set: 41 56 41 97 96 34 95 52 23 67 What is the mean (¯x) of this data set?mean = (Please show your answer to one decimal place.)What is the median of this data set?median = What is the mode of this data set?mode =
A team of ten (10) construction workers who are working on a project are classified according to the skill levels, Classes A to D. The table below shows the number of workers in each of the four (4) classes and their respective hourly pay-rate. Pay-rate (Rands/hour) Number of workers Class A 80 Class B 60 Class C 55 Class D 50 4. Calculate the mean hourly pay-rate for the 10 workers. A. R24.50/hour B. R57/hour C. R57.50/hour D. R61.75/hour
Determine the value of the interquartile range for the following data set: 45.5, 67.1, 20.8, 74.2, 18.0, 38.7, 5.8 State the interquartile range value rounded to the nearest tenth.
The number of needed repairs while under warranty for a Sure Cut lawnmower has a population distribution as shown in the probability histogram below. The population mean is also given. Population 0.6 - 0.5- 0.4- population mean: u=1.15 0.3- 0.2- Number of repairs Probability
Interpret scatter diagram and descriptive statistics.
Direction: Solve the following problems. Identify the given and provide the correct illustrations for each situation. Problem: The IQ of 100 STEM students in ZNHS are found out to be normally distributed, having a mean of 110 and a standard deviation of 10. a. If a scholarship is offered to students with IQ higher than 115, What is the percentage of qualified STEM students. b. if University of the Philippines requires at least an IQ of 100 for admission, how many of STEM students may be admitted? c. If University of the Philippines gives scholarship to the top 10% of the group, find the least IQ a ŠTEM student must have to avail scholarship.
Calculate the mean, median, mode, and variance for the following dataset which represents the average rain precipitation depth at 20 gauge stations during one year. Data were recorded to the nearest mm. Class limit 10-14 Freq. 15-19 20-24 25-29 30-34 35-39 40-44 3 5 3 1