1).A box contains 20 balls. Five are blue, seven are red, and eight are black. Four...

1).A box contains 20 balls. Five are blue, seven are red, and eight are black. Four balls are selected at random and with replacement. Calculate the probability that fewer than two red balls are chosen.

ANSWER: .5630

2. A company recently hired 50 employees. You are given:

(a) Thirty employees are from Iowa; the remaining came from New York.

(b) Of the employees who are from Iowa, 30% are males and the remaining are females.

(c) Of the employees who are from New York, 60% are males and the remaining are females.

(d) Five employees were randomly selected and sent for training.

Calculate the probability that three out of the five employees sent for training were male.

ANSWER: .2549

3. There are ten boys and seven girls in a class. Three children are randomly chosen from the class to form a committee. Calculate the probability that the committee has more boys than girls.

ANSWER: .6397

Expert Solution

orchestra answered 1 year ago

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