Suppose that people are equally likely to have been born on any day of the week. You meet a new friend, and ask her on what day of the week she was born.

Suppose that people are equally likely to have been born on any day of the week. You meet a new friend, and ask her on what day of the week she was born.

a. List the simple events in the sample space.

b. What is the probability that she was born on a weekend (Saturday or Sunday)?

Refer to Exercise 7.41. Now suppose you meet two new friends independently, and ask each of them on what day of the week they were born.

a. What is the probability that the first friend was born on a Friday?

b. What is the probability that both friends were born on a Friday?

c. What is the probability that both friends were born on the same day of the week?

Exercise 7.41

Suppose that people are equally likely to have been born on any day of the week. You meet a new friend, and ask her on what day of the week she was born.

a. List the simple events in the sample space.

b. What is the probability that she was born on a weekend (Saturday or Sunday)?

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