(b) Calculate the coefficient of variation for each sample. (Enter your answer as a percentage rounded to 1 decimal place.)CVACVB%%(c) What is your conclusion about consumer preferences for the two sauces?O On average, consumers seem to prefer Sauce B over Sauce A.O On average, consumers seem to prefer Sauce A over Sauce B. Noodles and Company tested consumer reaction to two spaghetti sauces. Each of 70 judges rated both sauces on a scale of 1 (worst)to 10 (best) using several taste criteria. To correct for possible bias in tasting order, half the judges tasted Sauce A first, while the otherhalf tasted Sauce B first. Actual results are shown below for "overall liking."Sauce A:7, 5, 5, 2, 5, 5, 6, 2, 5, 6, 2, 8, 7, 7, 8, 9, 7, 7, 8, 7, 7, 6, 3, 7, 6,8, 2, 7, 7, 7, 6, 8, 6, 4, 7, 7, 7, 8, 4, 5, 6, 8, 7, 8, 1, 8, 5, 6, 8, 5,5, 6, 1, 6, 6, 7, 5, 5, 9, 6, 2, 8, 8, 5, 8, 6, 8, 7, 8, 2Sauce B:7, 6, 7, 9, 8, 4, 6, 8, 6, 7, 7, 2, 6, 8, 6, 7, 7, 5, 8, 5, 6, 3, 8, 5, 6,8, 8, 7, 1, 5, 8, 7, 7, 7, 8, 9, 7, 8, 5, 6, 8, 8, 6, 7, 7, 5, 2, 5, 7, 5,6, 8, 5, 6, 7, 7, 5, 8, 1, 6, 5, 5, 7, 8, 1, 5, 8, 5, 8, 5Click here for the Excel Data File(a) Calculate the mean and standard deviation for each sample. (Round your answers to 3 decimal places.)Sauce ASauce BXS

The data is given as- For Sauce…

Answered: (b) Calculate the coefficient of…

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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In the book Business Research Methods (5th ed.). Donald R. Cooper and C. William Emory discuss studying the relationship between on-the-job accidents and smoking. Cooper and Emory describe the study as follows: Suppose a manager implementing a smoke-free workplace policy is interested in whether smoking affects worker accidents. Since the company has complete reports of on-the-job accidents, she draws a sample of names of workers who were involved in accidents during the last year. A similar sample from among workers who had no reported accidents in the last year is drawn. She interviews members of both groups to determine if they are smokers or not. The sample results are given in the following table. On-the-Job No 7 Smoker Heavy Moderate Nonsmoker 16 Column total 34 Heavy Moderate Yes Nonsmoker Total 12 6 Expected counts are below observed counts No Accident Total 19 7 9.21 9 Row 1 Row 2 Row 3 Column 1 Column 2 16 32 Accident 12 9.79 6 Accident Row Total 7.27 16 15.52 32 7.73 16…
Applying the Concepts and SkillsStudy Time and Score. An instructor at Arizona State University asked a random sample of eight students to record their study times in a beginning calculus course. She then made a table for total hours studied (x) over 2 weeks and test score (y) at the end of the 2 weeks. Here are the results. x 10 15 12 20 8 16 14 22 y 92 81 84 74 85 80 84 80 Study Time and Score. Following are the data on total hours studied over 2 weeks and test score at the end of the 2 weeks from Exercise 15.27. x 10 15 12 20 8 16 14 22 y 92 81 84 74 85 80 84 80 a. At the 1% significance level, do the data provide sufficient evidence to conclude that a negative linear correlation exists between study time and test score for beginning calculus students?b. Repeat part (a) using a 5% significance level.
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A CBS News poll conducted June 10 and 11, 2006, among a nationwide random sample of 651 adults, asked those adults about their party affiliation (Democrat, Republican or none) and their opinion of how the US economy was changing ("getting better," "getting worse" or "about the same"). The results are shown in the table below. better same worse Republican 38 104 44 Democrat 12 87 137 none 21 90 118 Express each of your answers as a percent rounded to the nearest tenth (for example, 12.3%). a. What percent of survey respondents identified themselves as affiliated with neither party (marginal probability)? b. What percent of survey respondents thought the economy was getting better and were affiliated with neither party (joint probability)? c. What percent of those affiliated with neither party thought the economy was getting better (conditional probability)?
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Social media is becoming more and more popular around the world. Suppose a website provides estimates of the number of social media users in various countries. Assume that the results for surveys in the United Kingdom, China, Russia, and the United States are as follows. Use Social Media Yes No United Kingdom 480 320 Country China Russia 235 265 343 Need Help? 357 O Ho: All population proportions are not equal. H₂: P₁ = P₂ = P3 = P4 Read It OHO: Not all population proportions are equal. Ha: P₁ = P₂ = P3 = P4 (a) Conduct a hypothesis test to determine whether the proportion of adults using social media is equal for all four countries. State the null and alternative hypotheses. O Ho: P₁ = P₂ = P3 = P4 H₂: Not all population proportions are equal. United States 620 380 Ho: P₁ = P₂ = P3 = P4 H: All population proportions are not equal. Find the value of the test statistic. (Round your answer to two decimal places.) What is the p-value? (Round your answer to four decimal places.) p-value =…
← The results of a survey on the belief that stem cell research has merit are shown in the table below. % X 1524 SEP 28 95% CI (0.7052, 0.7434) Here, X denotes the number who believed that stem cell research has merit. Complete parts a and b below. N 2104 a. Explain how to interpret "Sample p" and "95% CI" in this table. The "Sample p" is the proportion of all respondents in the sample who believe stem cell research has merit, 1524/2104 0.72. The "95% CI" is the 95% confidence interval and it means that we can be 95% confident that the interval 0.7052 to 0.7434 contains the population proportion. (Round to four decimal places as needed.) b. What is the 95% margin of error associated with the poll? The 95% margin of error is. (Round to four decimal places as needed.) F5 6 Sample p 0.724335 tv F6 Clear all & F7 Check answer Ndi 8 DIL 9 elp students like you learn core concep for 10 level of significance and two (0-65) (0-35) 1000 Chegg Study F9 A O
b. You analyze the following four vinegars in the lab and obtain the results indicated in the table. If you are going to need a large quantity of vinegar and want to get the most acetic acid for your money, which brand of vinegar should you buy? Explain your reasoning. Vinegar Cost/Qt. Weight % Acetic Acid Piedmont white $0.51 4.47 Piedmont cider $0.59 4.52 $0.62 5.02 Heinz white 5.05 $0.71 Heinz cider
Determine the mean of the randon variable

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(b) Calculate the coefficient of variation for each sample. (Enter your answer as a percentage rounded to 1 decimal CVA CVB % % (c) What is your conclusion about consumer preferences for the two sauces?