Question: 6.40 Let X be a binomial random variable for n=25, p=0.2. a. Use Table 1 in Appendix I to calculate P(4 X 6). b. Find

6.40 Let X be a binomial random variable for n=25, p=0.2.

a. Use Table 1 in Appendix I to calculate P(4 X 6).

b. Find and or for the binomial probability distribu- tion, and use the normal distribution to approxi- mate the probability P(4X6). Note that this value is a good approximation to the exact value of P(4 X 6) even though np = 5.

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