Question: 1) Next, the probability distribution of a random variable x is presented. x f (x) 20 0.38 25 0.10 30 0.15 35 0.37 answer: a)

1) Next, the probability distribution of a random variable x is presented.

x f (x)
20 0.38
25 0.10
30 0.15
35 0.37

answer:

a) What is presented in the exercise, is it a probability distribution?

b) What is the probability that x = 35?

c) What is the probability that x is less than or equal to 25?

2. Consider a binomial experiment with n = 20 and p = 0.70. Use the binomial formula to calculate:

a) P(x = 15)

b) median

c) variance

d) standard deviation

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