Question

Consider the following example survey results of 18-to 34-year-olds in the United Stat in response to the question "Are you currently living with your family?": Yes 106 Men Women Totals No 141 161 302 Totals 247 253 500 92 198 a. Develop the joint probability table for these data and use it to answer the following questions. b. What are the marginal probabilities? c. What is the probability of living with family given you are an 18-to 34-year-old man in the U.S.? What is the probability of living with family given you are an 18- to 34-year-old woman in the U.S.? e. What is the probability of an 18- to 34-year-old in the U.S. living with family? f. If, in the U.S., 49.4% of 18-to 34-year-olds are male, do you consider this a good representative sample? Why?

Answer 1

solution : Given that (c) The probability - the person with 1. in the us is of living with family giver 18 to 34 year old men -: 0494 p(living and man) 0.22 . = 0.4453 Peman) (d) The probability of living with family given person with 18 to 334 year old women in the U.S. is 1 - P[living and women) 0.184 -0.3615 = 0.509 . p(women) (e) The porobability of an 18 to 34 year-old in the us living with family is 0.396 & if in the us 49.4% of 18 to 34 year olds are male yes, we can consider this is a good representative Sample because the male with family of 18 to 34 year olds is 49.4% Scanned with CamScanner "Thank you