A fair die is to be rolled 20 times. Find he expected value of the number...

Question

Question

A fair die is to be rolled 20 times. Find he expected value of the number of times (a). 6 appears.

(b). 5 or 6 appears.
(c). An even number appears. (d). Anything else but 6 appears.

please explain the step

math Statistics-And-Probability

Answer 1

Answer #1

Answer 2

Similar Homework Help Questions

a fair red die and a fair blue die are rolled. What is the expected value...

a fair red die and a fair blue die are rolled. What is the expected value of the sum of the number on the red die plus three times the number on the blue die?
A fair die is rolled 20 times, and the desirable outcomes are 2, 3, 5 or...

A fair die is rolled 20 times, and the desirable outcomes are 2, 3, 5 or 6. Calculate the probability that the desirable even occurs five times?
A fair die is rolled 20 times, and the desirable outcomes are 2, 3, 5 or...

A fair die is rolled 20 times, and the desirable outcomes are 2, 3, 5 or 6. Calculate the probability that the desirable even occurs five times?

5. A fair six sided die is rolled 10 times. Let X be the number of...

5. A fair six sided die is rolled 10 times. Let X be the number of times the number '6' is rolled. Find P(X2)
6. A fair six sided die is rolled three times. Find the probability that () all...

6. A fair six sided die is rolled three times. Find the probability that () all three rolls are either 5 or 6 (6) all three rolls are even (c) no rolls are 5 (d) at least one roll is 5 (e) the first roll is 3, the second roll is 5 and the third roll is even
a fair die is rolled 8 times. Find: (Please give an explanation for both answers. I'm...

a fair die is rolled 8 times. Find: (Please give an explanation for both answers. I'm unsure how to approach the questions) b) what is the probability the die lands on an odd number at least 2 times c) what is the probability the die lands on a 6 at most twice

Problem 8 A fair die is rolled 10 times. What is the probability that the rolled...

Problem 8 A fair die is rolled 10 times. What is the probability that the rolled die will not show an even number?
A fair die is rolled 10 times. What is the average number of even number outcomes?

A fair die is rolled 10 times. What is the average number of even number outcomes?
7. In n rolls of a fair die, let X be the number of times 1 is rolled, and Y the number of times ...

7. In n rolls of a fair die, let X be the number of times 1 is rolled, and Y the number of times 2 is rolled. Find the conditional distribution of X given Y-m 7. In n rolls of a fair die, let X be the number of times 1 is rolled, and Y the number of times 2 is rolled. Find the conditional distribution of X given Y-m

b) Find Var(X) 5. A fair six sided die is rolled 10 times. Let X be...

b) Find Var(X) 5. A fair six sided die is rolled 10 times. Let X be the number of times the number '6' is rolled. Find P(X2) B SEIKI