According to a recent survey, 31 percent of the residents of a certain state who are age 25 years or older have a bachelor’s degree. A random sample of 50 residents of the state, age 25 years or older, will be selected. Let the random variable B represent the number in the sample who have a bachelor’s degree. What is the probability that B will equal 40?

Let the random variable x represent the number of girls in a family of 3 children. Construct a table describing the probability distribution, then find the mean and SD. Is it unusual for a family of 3 children to consist of 3 girls

A test was given to a group of students. The grades and gender are summarized below   A B C Total Male 5 14 12 31 Female 20 13 10 43 Total 25 27 22 74 If one student is chosen at random from those who took the test,Find the probability that the student got a 'B' GIVEN they are female.

A test was given to a group of students. The grades and gender are summarized below   A B C Total Male 11 7 5 23 Female 19 3 20 42 Total 30 10 25 65 If one student is chosen at random from those who took the test,Find the probability that the student was female GIVEN they got a 'B'.

Two dice are rolled one after the other. Construct a sample space and determine the probability that the sum of the dots on the dice total 9 if the first die is a 3.

A test was given to a group of students. The grades and gender are summarized below   A B C Total Male 15 2 9 26 Female 5 20 7 32 Total 20 22 16 58 If one student is chosen at random from those who took the test,Find the probability that the student was female GIVEN they got an 'A'.

A test was given to a group of students. The grades and gender are summarized below   A B C Total Male 8 13 6 27 Female 11 14 3 28 Total 19 27 9 55 If one student is chosen at random from those who took the test,Find the probability that the student was male GIVEN they got an 'A'.

A test was given to a group of students. The grades and gender are summarized below If one student is chosen at random from those who took the test, Find the probability that the student was female GIVEN they got a 'B'.

Two dice are rolled one after the other. Construct a sample space and determine the probability that the sum of the dots on the dice total 8 if the first die is a 2. The probability that the sum of the dots on the dice total 8 if the first die is a 2 is

In the United States, voters who are neither Democrat nor Republican are called Independent. It is believed that 9% of voters are Independent. A survey asked 27 people to identify themselves as Democrat, Republican, or Independent. A. What is the probability that none of the people are Independent? Probability = B. What is the probability that fewer than 5 are Independent? Probability = C. What is the probability that more than 3 people are Independent? Probability =