# Question

A box contains 10 items, of which 3 are defective and 7 are non-defective. Two items are selected without replacement, and x is the number of defective items in the sample of two. Explain why x is not a binomial random variable.

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A box contains 10 items, of which 3 are defective and 7 are non-defective. Two items are randomly selected, one at a time, with replacement, and x is the number of defectives in the sample of two. Explain why x is a binomial ...A binomial random variable is based on n _ 20 and p _ 0.4. Find ∑x2P(x) a. Express P(x) = 1/6 for x = 1, 2, 3, 4, 5, 6, in distribution form. b. Construct a histogram of the probability distribution P(x) = 1/6 for x = 1, 2, 3, 4, 5, 6 c. Describe the shape of the histogram in part b. a. Form the probability distribution table for P(x) = x/6 for x = 1, 2, 3. b. Find the extensions xP(x) and for each x. c. Find ∑[xP(x) and ∑ [x2P(x)] d. Find the mean for P(x) \= x/6 for x = 1, 2, 3 e. Find the ...The random variable A has the following probability distribution: a. Find the mean and standard deviation of a. b. How much of the probability distribution is within 2 standard deviations of the mean? c. What is the ...Post your question

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