Newest probability Questions | Wyzant Ask An Expert

Probability Statistics

04/08/21

How many ways can a chef arrange 8of 12 spice jars on a spice rack?

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Probability

04/08/21

A fair coin is tossed trice. Let X be the number of tails that are observed.

Construct the probability distribution of X.

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Probability

04/07/21

Calculus probability

Assume that thermometer readings are normally distributed with a mean of 0 degrees C and a standard deviation of 1 degree C. A thermometer is randomly selected and tested. Find the probability... more

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Probability

04/07/21

what's the probability of drawing a Jack, queen or king from a deck of cards over 3 draws?

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Probability

04/07/21

Let the test statistic T have a t-distribution when Ho is true.

Give the significance level for each of the following situations: (Give your answers to 3 decimal places) (a) Ha:μ>μ0,n=16, rejection region t≥3.733 α=______ (b) Ha:μ≠μ0,n=31, rejection... more

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Probability

04/07/21

Let the test statistic z have a standard normal distribution when Ho is true.

Give the significance level for the following: (Give your answers to 3 decimal places) Ha:μ<μ0, rejection region z≤−2.75 α=______

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Probability

04/07/21

Quantative Literature

The probability that it will rain on any given day is 15% or 0.15. Find the probability it will rain at least once in the next three days.

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Probability

04/07/21

If a person draws four cards from a standard deck (without replacing them), what is the probability that at least one of the cards is a face card?

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Probability Math

04/06/21

If P(A) = 0.2, P(B) = 0.7, and P(A and B) = 0.1, find P(A or B).

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Probability Math

04/06/21

Two dice are rolled. The sum of the dice is a 5 or a 11. Compute the probability of the compound event occurring.

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Probability Math Statistics Sat Math

04/06/21

Tom, a holiday light inspector, has to check a shipment of multicolored Christmas lights. Suppose that the probability of a defective lightbulb is 30%.

a. Find the expected number of bulbs that Tom has to go through until he finds one that is defective.b. Find the probability that the first defective bulb that Tom finds is the 8th bulb.c. Find the... more

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Probability Math Algebra 1 Algebra 2

04/06/21

CONTINUOUS RANDOM VARIABLE PLEASE HELP

A continuous random variable is normally distributed. The probability that a value in the distribution is greater than 56 is 0.6387. Find that probability that a value in the distribution is less... more

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Probability Math Statistics Sat

04/06/21

Statistics Probability.

Every cereal box has a gift inside, but you cannot tell from the outside what the gift is. The store manager assured you that 16 of the 47 boxes on the shelf have a secret decoder ring. The other... more

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Probability Math Algebra 1 Calculus

04/06/21

Distribution of Values

A distribution of values is normal with a mean of 729.2 and a standard deviation of 30.8. Find the probability that a randomly selected value is between 662.1 and 826.5Enter your answer as a number... more

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Probability Statistics

04/06/21

Probability Statistics - URGENT

A population is normally distributed with mean 17.9, and a standard deviation of 3.5. fine the probability that a sample of 14 values take from the population will have a mean less than 16. * all z... more

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Probability Algebra 1 Statistics Algebra

04/06/21

Continuous Random Variable URGENT

A continuous random variable is normally distributed. The probability that a value in the distribution is greater than 56 is 0.6387. Find the probability that a value in the distribution is less... more

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Probability Math Statistics

04/04/21

Determine the probability that at least 4 brake pads are defective in an order of 200 pads.

In a manufacturing process, 0.2% of the brake pads that come off of the production line are defective. Determine the probability that at least 4 brake pads are defective in an order of 200 pads.I’m... more

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Probability

04/03/21

probability questions

You have been provided with marks obtained by 1000 students of mass communication. the average score of student was 68 with a standard deviation of 16. assuming the data to be normally distributed... more

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Probability

04/02/21

Three Coins Probability

If you flip three fair coins, what is the probability that you'll get all three heads?

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Probability Statistics

04/02/21

Set of normally distributed test scores has a mean of 77 and a standard deviation of 5.

Set of normally distributed test scores has a mean of 77 and a standard deviation of 5. (Draw distribution and indicate each value)a. What is the probability that normally selected score will be... more

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Probability Statistics

04/02/21

How many different 3 letter words you can construct from the letters of the word “ TRAIN “, using each letter only once?

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Probability Statistics

04/02/21

For binomial distribution with n=8 and p=0.3 find: a) P( x=0) b) P( x<2 ) c) P( x>3 )

For binomial distribution with n=8 and p=0.3 find: a) P( x=0)b) P( x<2 ) c) P( x>3 )

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Probability Geometry

03/31/21

If A and B are independent events, which equation must be true?

A. P(B|A) = P(A)B. P(B|A) = P(B)C. P(B|A) = P(A) × P(B)D. P(B|A) = P(A) + P(B)

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Probability Calculus Statistics

03/30/21

How do I find standard of error?

Suppose that the efficiency of a certain drug is 0.49. Consider the sampling distribution (sample size n= 94) for the proportion of patients cured by this drug.What is the standard error of this... more

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Probability Statistics

03/30/21

Probability of randomly selected

Fox News recently reported that the mean annual cost of auto insurance is $1000. Assume the standard deviation is $200, and the cost is normally distributed. Take a random sample of 13 auto... more

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How many ways can a chef arrange 8of 12 spice jars on a spice rack?

A fair coin is tossed trice. Let X be the number of tails that are observed.

Calculus probability

what's the probability of drawing a Jack, queen or king from a deck of cards over 3 draws?

Let the test statistic T have a t-distribution when Ho is true.

Let the test statistic z have a standard normal distribution when Ho is true.

Quantative Literature

If a person draws four cards from a standard deck (without replacing them), what is the probability that at least one of the cards is a face card?

If P(A) = 0.2, P(B) = 0.7, and P(A and B) = 0.1, find P(A or B).

Two dice are rolled. The sum of the dice is a 5 or a 11. Compute the probability of the compound event occurring.

Tom, a holiday light inspector, has to check a shipment of multicolored Christmas lights. Suppose that the probability of a defective lightbulb is 30%.

CONTINUOUS RANDOM VARIABLE PLEASE HELP

Statistics Probability.

Distribution of Values

Probability Statistics - URGENT

Continuous Random Variable URGENT

Determine the probability that at least 4 brake pads are defective in an order of 200 pads.

probability questions

Three Coins Probability

Set of normally distributed test scores has a mean of 77 and a standard deviation of 5.

How many different 3 letter words you can construct from the letters of the word “ TRAIN “, using each letter only once?

For binomial distribution with n=8 and p=0.3 find: a) P( x=0) b) P( x<2 ) c) P( x>3 )

If A and B are independent events, which equation must be true?

How do I find standard of error?

Probability of randomly selected

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