5,341 Answered Questions for the topic probability

Probability

02/01/24

probability and statistics
An ordinary (fair) die is a cube with the numbers 1 through 6 on the sides (represented by painted spots). Imagine that such a die is rolled twice in succession and that the face values of the two... more
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Probability

01/27/24

Find the probability that the student was male OR got an "B"
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Probability

01/22/24

What is the probability that a sequence of seven flips of a fair coin turns out to be exactly HTHTTHH?
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Probability

01/21/24

What is the probability no More than 5 of the next 100 will injure themselves?
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Probability

01/21/24

What is the probability More than 3 of the next 100 will injure themselves?
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Probability

01/13/24

Help with a probability density question
The probability density of a random variable X is given in the figure below.From this density, the probability that X > 1.92 or X < 0.38 is:
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01/03/24

SAT PREP - Problem 1
Harry and Terry are each told to calculate . Harry gets the correct answer. Terry ignores the parentheses and calculates . If Harry's answer is  and Terry's answer is , what is ?
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Probability

12/29/23

If a cat is pregnant with kittens, what is the probability of guessing each sex of the kitten AND guessing the number of kittens a pregnant cat will have.
I had a dream that my pregnant cat had four kittens, three boys and one girl, and all of them were healthy. No kittens died. What is the probability of that actually happening? Yeah, the dream did... more
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Probability

12/23/23

Combinations that make a 2 pair

I was reading from textbook. It says that for a full house there are 13 values x (4 3) suits x 12 remaining values x (4 3) suits so 13 x 4 x 12 x 6 = 3744. That makes sense to me. It also says for... more
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Probability Math Statistics

12/16/23

statistics and probability

A researcher is investigating the effect of a new exercise program on weight loss. The null hypothesis is that the new exercise program does not lead to more weight loss than a standard exercise... more
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Probability Math Statistics

12/16/23

hypothesis stats and proba
A company is testing a new product to see if it is more effective than their current product. The null hypothesis is that the new product is not more effective than the current product, while the... more
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Probability

12/11/23

In how many ways can three pairs of different colored socks be removed from a drawer, one sock at a time?
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Probability

11/21/23

I need the answer for this math question
A simple random sample of 20 pages from a dictionary is obtained. The numbers of words defined on those pages are​ found, with the results n=20​, x=5.51 ​words, s=16.1 words. Given that this... more
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Probability

11/20/23

Find the probability that a single randomly selected value is at least 978 dollars. P(X > 978) =
A leading magazine (like Barron's) reported at one time that the average number of weeks an individual is unemployed is 31 weeks. Assume that for the population of all unemployed individuals is... more
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Probability Statistics

11/20/23

PROBABILITY and STATISTICS
A population of values has a normal distribution with �=226.5 and �=62.7. You intend to draw a random sample of size �=80.Answer the following, rounding your answers to three decimals where... more
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Probability Math Statistics

11/13/23

Can you help me with this question
A genetic experiment involving peas yielded one sample of offspring consisting of 433 green peas and 166 yellow peas. Use a 0.01 significance level to test the claim that under the same​... more
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Probability Math Finite Math

11/13/23

please help me solve it by steps
One of two urns is chosen at random with one as likely to be chosen as the other. Then a ball is withdrawn from the chosen urn. Urn 1 contains 1 white and 5 red​ balls, and urn 2 has 4 white and 2... more
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Probability Finite Math

11/13/23

finite math help please
One of two urns is chosen at random with one as likely to be chosen as the other. Then a ball is withdrawn from the chosen urn. Urn 1 contains 1 white and 4 red​ balls, and urn 2 has 4 white and 1... more
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Probability Math Business Statistics

11/13/23

Statistics question
In a chi-square goodness of fit test of, the number of degrees of freedom equals the:a. number of observations minus one.b. number of sample observations minus the missing observations.c. number of... more
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Probability

11/10/23

find the probability that exactly 7 of them say job applicants should follow up within two weeks
Assume that when human resource managers are randomly selected, 41% say job applicants should follow up within two weeks. If 9 human resource managers are randomly selected, find the probability... more
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Probability

11/10/23

question in statics and probability
According to an avid aquarist, the average number of fish in a 20-gallon tank is ten, with a standard deviation of two. His friend, also an aquarist, does not believe that the standard deviation is... more
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Probability

11/06/23

The probability that a randomly selected adult has an IQ less than 141.8 is
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Probability Math Statistics

11/04/23

STATS HELP PLEASE
I need help with STATS homework please. I tried twice already on A thinking that the random variable was a "random selected night" however it tells me that this is wrong for the answer. I tried... more
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Probability

11/01/23

Odds to Win Raffle

What are the odds of winning a raffle that sells 10 tickets with four (4) winners? Winning tickets are put back in the raffle for future drawings. I purchase three (3) tickets. What are my odds to... more
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Probability

10/24/23

probability question
Three cards are drawn Three cards are drawn from an ordinary deck of playing cards. You flip the last two of them and find that both are spades. What is the probability that also the first card is... more
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