e 22.11. In a report on consumer preference, it was given that out of 500 persons surveyed,400 preferřed variety A, 380 preferred variety B and 270 liked both A and B. Are the data consistent ?a B.irB.ent.Si

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Answered: 2 22.11. In a report on consumer…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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15. Research results suggest that IQ scores for boys Plomin, 2006). A typical study looking at 10-year-old are more variable than IQ scores for girls (Arden & size would be reported in a journal article. children classifies participants by gender and by low. average, or high IQ. Following are representing the research results. Do the data indicate a significant difference between the frequency distri- butions for males and females? Test at the .05 level of significance and describe the difference. hypothetical data 1 IQ Low Average High Вoys 18 42 20 80 Girls 12 54 14 80 n = 160 Int Ava
24. The personnel manager of a consumer product company asked a random sample of employees how they felt about the work they were doing. The following table gives a breakdown of their responses by gender. Do the data provide sufficient evidence to conclude that the level of job satisfaction is related to gender? Use a = 0.10 Gender Male Female Very Interesting 70 35 Response Fairly Interesting 41 34 Not Interesting 9 11
Can someone please help? Thank you.
10.59 To tip or not to tip. A study of tipping behaviors examined the relationship between the color of the shirt worn by the server and whether the customer left a tip. 12 There were 418 male customers in the study; 40 of the 69 who were served by a server wearing a red shirt left a tip. Of the 349 who were served by a server wearing a different colored shirt, 130 left a tip. a. Find the proportion of tippers for the red-shirted servers and the proportion of tippers for the servers with other colored shirts. b. Find a 95% confidence interval for the difference in proportions. a. Give a null hypothesis for this setting in terms of the parameters. Explain the meaning of the null hypothesis in simple terms. b. Give an alternative hypothesis for this setting in terms of the parameters. Explain the meaning of the alternative hypothesis in simple terms. Give a reason for your choice of this particular alternative hypothesis. c. Are the conditions satisfied for the use of the significance…
which statement is NOT true about the following set of data?
10. Determine if the number of absences incurred by a student is related to his or her final test score in a Statistics class. The data obtained in a study is from seven randomly selected students. No. of Absences, x 6. 15 9. 12 8. Final grade, y 82 86 43 74 58 90 78 41 16.4
12.2 ONLY!
.Seven instructors are rated by first and seconf year students on “clarity of presentation” and the results are tabulated. Is there a significant correlation between the ratings of freshmen and sophomores on the clarity of presentation of theseveninstructors? Intructor Freshmen Sophomores 1 44 58 2 39 42 3 36 18 4 35 22 5 33 31 6 29 38 7 22 38
18. The governor of New York has banned selling or purchasing "large" soft drinks, where a "large" is defined as being more than 16 oz. Sonic, famous for its Route 44 drinks is interested in estimating the proportion of New Yorkers that favor this ban. From a random survey of 800 New Yorkers, 375 answered no to the question, “Do you favor the governor's ban on 'large' soft drinks?" a. Find a 97.5% confidence interval for the proportion of New Yorkers who favor the ban on "large" soft drinks. b. Interpret the confidence interval. c. Can you conclude with 97.5% confidence that a majority of New Yorkers favor the ban on "large" soft drinks? Why or why not. d. Without doing any other calculations, can you be 99% confident that a majority of New Yorkers favor the ban on “large" soft drinks?
The ANOVA test described shows whether or not there is a a. Relationship b. Preference C. Dependence d. Equality of three or more means e. None of these

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2 22.11. In a report on consumer preference, it was given that out of 500 persons surveyed, 400 preferred variety A, 380 preferred variety B and 270 liked both A and B. Are the data consistent ? 31