- Suppose That 20 000 Married Adults In A Country Were Randomly Surveyed As To The Number Of Children They Have The Resul 1 (49.26 KiB) Viewed 184 times
Suppose that 20,000 married adults in a country were randomly surveyed as to the number of children they have. The results are compiled and are used as theoretical probabilities. Let x = the number of children married people have. X P(x) xP(x) ) 0 0.15 1 0.20 2 0.30 3 4 0.10 5 0.05 6 (or more) 0.05 (a) Find the probability that a married adult has three children. (Enter your answer to two decimal places.) -10 (6) In words, what does the expected value in this example represent? O the number of children married adults in the country have O the average number of children adults in the country have O the number of children adults in the country have the average number of children married adults in the country have AC) Find the expected value. (Enter your answer to two decimal place.) 2.15 children (d) Is it more likely that a married adult will have two to three children or four to six children? How do you know? it is more likely have two to three children, with p = 0.3 O it is more likely to have four to six children, with p = 0.2 O it is more likely to have four to six children, with p=0.8 It is more likely to have four to six children, with p = 0.1 O it is more likely to have two to three children, with p=0.45 Additional Materials Book