# Probability Examples and Explanations

Recent questions in Probability
Jordan Graves 2023-03-30

## The probability that a man will be alive in 25 years is 3/5, and the probability that his wifewill be alive in 25 years is 2/3Determine the probability that both will be alive

se2ng0uhp 2023-03-29

## How many different ways can you make change for a quarter??(Different arrangements of the same coins are not counted separately.)

Maui1opj 2023-03-23

## One hundred people line up to board an airplane that can accommodate 100 passengers. Each has a boarding pass with assigned seat. However, the first passenger to board has misplaced his boarding pass and is assigned a seat at random. After that, each person takes the assigned seat. What is the probability that the last person to board gets his assigned seat unoccupied? A) 1B) 0.33C) 0.6D) 0.5

Urijah Lawrence 2023-03-13

## From a pack of 52 cards, two cards are drawn in succession one by one without replacement. The probability that both are aces is...

Eliza Berry 2023-03-13

## A pack of cards contains $4$ aces, $4$ kings, $4$ queens and $4$ jacks. Two cards are drawn at random. The probability that at least one of these is an ace is A$\frac{9}{20}$ B$\frac{3}{16}$ C$\frac{1}{6}$ D$\frac{1}{9}$

Tyrell Singleton 2023-02-26

## The unit of plane angle is radian, hence its dimensions are A) $\left[{M}^{0}{L}^{0}{T}^{0}\right]$ B) $\left[{M}^{1}{L}^{-1}{T}^{0}\right]$ C) $\left[{M}^{0}{L}^{1}{T}^{-1}\right]$ D) $\left[{M}^{1}{L}^{0}{T}^{-1}\right]$

inimigurhkg 2023-02-22

## Clinical trial tests a method designed to increase the probability of conceiving a girl. In the study, 340 babies were born, and 289 of them were girls. Use the sample data to construct a 99​% confidence interval estimate of the percentage of girls born?

Tanya Love 2023-02-21

## What is the probability of drawing a red face card from a deck of cards?

Liana Vaughn 2023-02-09

## What is the probability of getting a black ace or a red jack when drawing a card from a deck of 52?

verderaf1xq 2023-02-09

## A king comes from a family of two children. What is the probability that his sibling is a sister? A)1/2; B)1/3; C)2/3; D)3/4

Heath Frazier 2023-01-28

## Let X represents the difference between the number of heads and the number of tails obtained when a coin is tossed 6 times. What are possible values of X?

mascaraspx2 2023-01-21

## Lynn and Dawn tossed a coin 50 times and got heads 22 times .What is the experimental probability of tossing heads using Lynn and Dawn'results?

bararskzs 2023-01-20

## George will play a game at the school fair in which he will toss a penny, a dime, and a quarter at the same time. He will receive 3 points for each coin that lands with heads face up. Let a represent the total number of points awarded on any toss of the coins. What is the expected value of a?

Carina Nash 2023-01-07

## You toss a coin and randomly select a number from 0 to 9. What is the probability of getting tails and selecting a 1?

prydlyfrl7w 2023-01-07

## If you roll five dice, what are the odds of rolling five 5's?

2selz76t 2022-12-18

## The state of Georgia has several statewide lottery options. One of the simpler ones is a "Pick 3" game in which you pick one of the 1000 three-digit numbers between 000 and 999. The lottery selects a three-digit number at random. With a bet of \$1, you win \$470 if your number is selected and nothing (\$0) otherwise.(a) With a single \$1 bet, what is the probability that you win \$470?(b) Let X denote your winnings for a \$1 bet, so x = \$0 or x = \$470. Construct the probability distribution for X. Use 3 decimal places.X P(X)\$0 \$470(c) The mean of the distribution equals \$(d) Would this be considered a gain for you?No. For every \$1 I pay, I will lose \$ 0.53 on average.No. For every \$1 I pay, I will lose \$0.47 on average.Yes. For every \$1 I pay, I will win \$0.47 on average.(e) If you play "PICK 3" 100 times, how much should you expect to lose? \$

2selz76t 2022-12-15

## How do you convert probability to percentage?

Joel Chela2022-12-12