In a recent poll, a random sample of adults in some country (18 years and older) was asked, "When you see an ad emphasizing that a product is "Made in our country," are you more likely to buy it, less likely to buy It,more nor less likely to buy it?" The results of the survey, by age group, are presented in the following contingency table. Complete parts (a) through (c).18-34 35-44 45-5455+TotalPurchase likelihood229 338 391 4001358More likelyLess likelyNeither more nor less likely 285 219 156 11130231880771544 566 570 5292209Total(a) What is the probability that a randomly selected individual is 35 to 44 years of age, given the individual is less likely to buy a product emphasized as "Made in our country"?The probability is approximately(Round to three decimal places as needed.)(b) What is the probability that a randomly selected individual is less likely to buy a product emphasized as "Made in our country," given the individual is 35 to 44 years of age?The probability is approximately(Round to three decimal places as needed.)(c) Are 18- to 34-year-olds more likely to buy a product emphasized as "Made in our country" than individuals in general?O Yes, more likelyNo, less likelyNextStatcrunch7:59SAMSUNGesc2$%&backspace@%23478# 3 The data in the following table show the association between cigar smoking and death from cancer for 138,543 men. Note: curent cigar smoker means cigar smoker at time of death.E Click the icon to view the table.(a) If an individual is randomly selected from this study, what is the probability that he died from cancer?(b) If an individual is randomly selected from this study, what is the probability that he was a current cigar smoker?(c) If an individual is randomly selected from this study, what is the probability that he died from cancer and was a current cigar smoker?(d) If an individual is randomly selected from this study, what is the probability that he died from cancer or was a current cigar smoker?(a) P(died from cancer)(Round to three decimal places as needed.)Data table(b) P(current cigar smoker) =(Round to three decimal places as needed.)Died fromCancerDid Not Die(c) P(died from cancer and current cigar smoker) =(Round to three decimal places as needed.)from Cancer(d) P(died from cancer or current cigar smoker) =(Round to three decimal places as needed.)Never smoked cigarsFormer cigar smokerCurrent cigar smoker72288151122,2235,7449,615PrintDoneStatcrunchNext7:59SAMSUNG火esc%23$backspace234678.回 85

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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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A survey was conducted to determine whether hours of sleep per night are independent of age. A sample of individuals was asked to indicate the number of hours of sleep per night with categorical options: fewer than 6 hours, 6 to 6.9 hours, 7 to 7.9 hours, and 8 hours or more. Later in the survey, the individuals were asked to indicate their age with categorical options: age 39 or younger and age 40 or older. Sample data follow. Hours of Sleep Fewer than 6 6 to 6.9 7 to 7.9 8 or more Age Group 39 or younger 40 or older Need Help? 38 62 Read It 77 (a) Conduct a test of independence to determine whether hours of sleep are independent of age. State the null and alternative hypotheses. O Ho: Hours of sleep per night is not independent of age. H₂: Hours of sleep per night is independent of age. a 63 OHO: Hours of sleep per night is mutually exclusive from age. H₂: Hours of sleep per night is not mutually exclusive from age. % O Ho: Hours of sleep per night is independent of age. H₂: Hours of…
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