Math Answers

Which of the following statements is not an example of a discrete random variable?

Select one:

The age of male respondents to a questionnaire about gender differences

The number of sales a salesperson makes per year

The number of school-age children in a particular family

The number of female respondents to a questionnaire about gender differences

Consider the composition of a 3-child family in which the children were born at different times but a girl is as likely as a boy at each birth. What is the probability that the oldest child and the youngest child are of the same gender?

A bag contains 4 red balls, 3 blue balls and 5 yellow balls. If a ball is selected at random, find the probability that the ball will be blue or yellow.

There are basically two types of random variables; discrete and ________ random variables.

An urn contains10 balls of equal size but distinguishable only by colour. 5 of the balls are blue, 3 are red and 2 are green. If a ball is selected at random, what is the probability that it will be a white ball?

If the probability that it may rain tomorrow is 2/5, what is the probability that it may not rain?

When a coin is tossed 5 times, how many possible outcomes are expected to be listed in the sample space?

How many different permutations can be made from the letters in the word “CHICHARITO”?

A coin is flipped and a die is rolled. Find the probability of getting a tail on the coin and a 3 on the die.

Determine the unique solution of the following differential equations by using Laplace transforms:

y''(t) + 2y'(t) -3y(t) = e^-3t if y'(0) = 0 and y(0) = 0