Distribution 29371

Let the random variable ξ represent the number of satisfied customers. The probability of a satisfied customer for each of the four customers is 7/10. Specify:

a) probability distribution, distribution function F(x) and P(-0.5 < ξ < 3.1)
b) variance of the random variable ξ.

Correct answer:

p = ?
r =  0.84

Step-by-step explanation:

n=4 q=7/10=107=0.7 P(0.5 < ξ < 3.1) = P(0 < ξ < 3.1)  p=?
r=n q (1q)=4 0.7 (10.7)=0.84



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