Select all that apply. | 10 points in the United States. In Australia, only 1.5%

Question

Select all that apply. | 10 points in the United States. In Australia, only 1.5% of the population has blood type AB. Suppose a random sample of 50 U.S. residents and 40 Australians is obtained. Consider the random variables described below: X: the number of US residents (out of 50) with blood type AB. Y: the number of Australians (out of 40) with blood type AB Z: the total number of individuals (out of 90) with blood type AB. Which of the following is true about the random variables X, Y, and Z? Check all that apply. X is a binomial random variable with n-50 and p 0.04 Y is a binomial random variable with n = 40 and p = 0.015 Z is a binomial random variable with n = 90 and p = 0.055 A. C.

Explanation / Answer

Select all that apply. | 10 points in the United States. In Australia, only 1.5% of the population has blood type AB. Suppose a random sample of 50 U.S. residents and 40 Australians is obtained. Consider the random variables described below: X: the number of US residents (out of 50) with blood type AB. Y: the number of Australians (out of 40) with blood type AB Z: the total number of individuals (out of 90) with blood type AB. Which of the following is true about the random variables X, Y, and Z? Check all that apply. X is a binomial random variable with n-50 and p 0.04 Y is a binomial random variable with n = 40 and p = 0.015 Z is a binomial random variable with n = 90 and p = 0.055 A. C.

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