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Probability & Statistics

06/19/17

What is the probability that Natasha got it right?

Billy answers on average 5 questions right out of 7. Natasha's average is 5 questions out of 9. They both attempt the same problem. If the question is answered correctly, what is the probability... more

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Probability & Statistics

06/17/17

Suppose that at an airport security checkpoint, 1 in 50 people are randomly selected for a search.

Suppose that at an airport security checkpoint, 1 in 50 people are randomly selected for a search. If there are 33 people ahead of you in line, what is the probability that you will be the first... more

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Probability & Statistics

06/15/17

A standard pair of six-sided dice is rolled. What is the probability of rolling a sum less than or equal to 4?

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Probability & Statistics

06/04/17

A baseball team has 12 players the coach needs to choose 3 to sit on the bench how many combinations of players can the coach choose? Show me the formula please

need to find the formula for probability of a team with 12 players 3 have to sit on the bench how many combinations does the coach have show formula please

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Probability & Statistics

05/26/17

Probability Question

A radio disc jockey has 7 songs on this upcoming hour's playlist: 3 are rock songs, 2 are reggae songs, and 2 are country songs. The disc jockey randomly chooses the first song to play, and then... more

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Probability & Statistics

05/26/17

Probablity

A science class has 7 girls and 5 boys in the seventh grade and 4 girls and 4 boys in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a... more

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Probability & Statistics

05/25/17

What are the odds of this occurring?

There are numbers from 1 to 2500. There are 625,000 people. What are the chances that 3 people pick the same 4 numbers?The order does not matter and the people cannot repeat.

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Probability & Statistics

05/24/17

Find the z-score that corresponds to the 30th percentile.

How to you find this answer using a ti-84 calculator.

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Probability & Statistics Normal Distribution

05/23/17

If a normal distribution has a mean of 65 and Standard deviation of 8. What score bounds the 19.8% below the mean?

I know how to solve the normal distribution in terms ofBelowBetween Two numbersAnd above the numberBut i don't know how to solve this with this kind of question.

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Probability & Statistics

05/22/17

Suppose there are 1000 first-year students at a certain university.

Two hundred are taking French but not statistics, one hundred are taking statistics but not French, and another 50 are taking both French and statistics. If you pick a student at random, find the... more

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Probability & Statistics

05/22/17

Brett makes a putt about 65% of the time. What is the probabilty that brett's first m9iss will be on his 5th putt?

Brett makes a putt about 65% of the time. What is the probabilty that brett's first miss will be on his 5th putt?

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Probability & Statistics

05/12/17

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Probability & Statistics

05/03/17

If you flip a coin three times, what is the probability (represented in percent) of getting three heads?

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Probability & Statistics

05/03/17

What is the probability (represented in percent) of selecting a Queen from the deck of cards after a person has already selected a Queen and did not put it back

What is the probability (represented in percent) of selecting a Queen from the deck of cards after a person has already selected a Queen and did not put it back in the deck?

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Probability & Statistics

05/03/17

Please help I have no idea how to do this question. Three people independently each think of an integer in the set {1,2,3,4,5,6,7}. Find, in fractional form, the probability that the sum of... more

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Probability & Statistics

04/21/17

The equation of a regression line is ŷ = 3.5x + 4.6. Determine the y - intercept of this line. Type a numerical answer in the provided space. Do not type spaces

Im not sure what you do with this question

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Probability & Statistics Statistics Question

04/21/17

The equation of a best fit line is y = 6x + 9. Predict a value for y when x = 4.

I don't understand how you do this math problem.

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What is the probability that Natasha got it right?

Suppose that at an airport security checkpoint, 1 in 50 people are randomly selected for a search.

A standard pair of six-sided dice is rolled. What is the probability of rolling a sum less than or equal to 4?

A baseball team has 12 players the coach needs to choose 3 to sit on the bench how many combinations of players can the coach choose? Show me the formula please

Probability Question

Probablity

What are the odds of this occurring?

Find the z-score that corresponds to the 30th percentile.

If a normal distribution has a mean of 65 and Standard deviation of 8. What score bounds the 19.8% below the mean?

Suppose there are 1000 first-year students at a certain university.

Brett makes a putt about 65% of the time. What is the probabilty that brett's first m9iss will be on his 5th putt?

a random sample of n=9 scores is obtained from a normal population with μ=40 and σ=18. what is the probability that the sample mean will be greater than M=43?

If a sample consists of the following data values, what is the sample mean?

Five people buy individual insurance policies

Jessica has 6 red t-shirts and 9 yellow t-shirts. If she picks one t-shirt at random, what is the probability that it will not be yellow?

The relationship between heavy alcohol use and family violence is +0.075.

There was a strong negative relationship between X and Y. What does this mean?

If you flip a coin three times, what is the probability (represented in percent) of getting three heads?

What is the probability (represented in percent) of selecting a Queen from the deck of cards after a person has already selected a Queen and did not put it back

You toss two dice simultaneously. What is the approximate probability (represented in percent) that you will obtain two 6’s on a single toss?

if there is a war in every 10 year then what is the probability that there will be no war in 25 year?

Statistics

Three people independently each think of an integer in the set {1,2,3,4,5,6,7}.

The equation of a regression line is ŷ = 3.5x + 4.6. Determine the y - intercept of this line. Type a numerical answer in the provided space. Do not type spaces

The equation of a best fit line is y = 6x + 9. Predict a value for y when x = 4.

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