In a recent poll, a random sample of adults in some country (18 years and older)

Question

In a recent poll, a random sample of adults in some country (18 years and older) was asked, When you soe an ad emphasizing that a product is "Made in our are you more likely to buy it, less likely to buy it, or neither more nor contingency table. Complete parts (a) through (c). He less likely to buy it? The results of the survey, by age group, are presented in the following 18-34 35-44 45-54 55 + Total 205 364 369 4031341 25 9 21 7 More likely Less likely Neither more nor less likely 292 208 171 Total (Round to three decimal places as needed.) 142 813 522 581 561 561 2225 (b) What is the probability that a randomly selected individual is lesl kiely to buy a produc emphasized as Made in our years of age? country," given the individual is at least 55 The probability is approximately [45571] (Round to three decimal places as needed.) Enter your answer in the answer box and then click Check Answer remaining To see what to study next, go to your Study Plan 12

Explanation / Answer

given info,
the count of student chosen less likely = 71
and the number of individual who purchase ratio 55+ = 561

p(55+ purchase likelihood ) = n(55+)/n(S) = 561/2225

p(student is less likely & 55+ purchase) = n(55+ purchase & less likely)/n(S) = 16/2225

p( student is less likely given that 55+ purchase likelihood) = P(55+ purchase & student is less likely) /p(55+ purchase likelihood ) = (16/2225) / 561/2225 = 16/561 = 0.02852 ~ 0.029

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