Suppose x is a binomial random variable with p = .4 and n = 25. a. Would
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a. Would it be appropriate to approximate the probability distribution of x with a normal distribution? Explain.
b. Assuming that a normal distribution provides an adequate approximation to the distribution of x, what are the mean and variance of the approximating normal distribution?
c. Use Table I in Appendix D to find the exact value of P(x ≥ 9).
d. Use the normal approximation to find P(x ≥ 9). Distribution
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Statistics For Business And Economics
ISBN: 9780321826237
12th Edition
Authors: James T. McClave, P. George Benson, Terry T Sincich
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