Pets. According to JAVMA News, a publication of the American Veterinary Medical Association, roughly 60% of U.S. households own one or more pets. Four U.S. households are selected at random. Use Table XI in Appendix A to solve the following problems. a. Find the probability that, of the four households sampled, the number that own one or more pets is exactly three; at least three; at most three.b. Find the probability distribution of the random variable X, the number of U.S. households in a random sample of four that own one or more pets.c. Without referring to the probability distribution obtained in part (b) or constructing a probability histogram, decide whether the probability distribution is right skewed, symmetric, or left skewed. Explain your answer.
Pets. According to JAVMA News, a publication of the American Veterinary Medical Association, roughly 60% of U.S. households own one or more pets. Four U.S. households are selected at random.
Use Table XI in Appendix A to solve the following problems.
a. Find the
b. Find the probability distribution of the random variable X, the number of U.S. households in a random sample of four that own one or more pets.
c. Without referring to the probability distribution obtained in part (b) or constructing a probability histogram, decide whether the probability distribution is right skewed, symmetric, or left skewed. Explain your answer.
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