5,395 Answered Questions for the topic probability

Probability Math Statistics

08/24/20

probabilty questions:
1.A PIN number for a bank card consists of 4-6 digits, with no restrictions. How many such PIN numbers are possible? (Repetition is allowed and 0 is allowed in first position) [Hint: consider 3... more
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Probability

08/23/20

If you are dealt 4 cards from a shuffled deck of 52​ cards, find the probability that all 4 cards are clubs.
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Probability

08/21/20

You have an equally likely chance of rolling any value on each of two distinct dice what’s the probability of rolling a sum of either 7 or 9
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Probability

08/21/20

probability question
The probability of a fish weighing more than 20kg is 0.78. A ship catches 15 fish in the first hour.The probability that the first fish caught weighs more than 20kg given at least 8 out of the 15... more
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Probability

08/21/20

Probabilty question

Organize all the outcomes of spinning the following spinners simultaneously. Use your result to calculate the probability observing a prime number and vowel.
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Probability

08/21/20

probability question (data)
5 students were surveyed. 15 take both biology and physics. 42 take biology and 32 take physics. Use Venn diagram to organize this data then calculate the probability that a student selected at... more
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Probability Math Statistics

08/20/20

4. The following letters are rearranged BROWN. What is the probability that the BRO are together and in this order

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Probability

08/20/20

Probability question
A manufacturer knows that their items have a normally distributed length, with a mean of 16 inches, and standard deviation of 1.9 inches.a. If one item is chosen at random, what is the probability... more
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Probability

08/20/20

Probability question
The probability that you will win a game is 0.37.a) If you play the game 1150 times, what is the most likely number of wins?   b) Find the standard deviation for the probability distribution.σ... more
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Probability

08/20/20

Probability question
A small regional carrier accepted 21 reservations for a particular flight with 20 seats. 13 reservations went to regular customers who will arrive for the flight. Each of the remaining passengers... more
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Probability

08/20/20

Help on probability question
After being rejected for employment, Kim Kelly learns that the Bellevue Credit Company has hired only three women among the last 17 new employees. She also learns that the pool of applicants is... more
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Probability

08/20/20

I need help on this question
The television show September Road has been successful for many years. That show recently had a share of 17, meaning that among the TV sets in use, 17% were tuned to September Road. Assume that an... more
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Probability

08/20/20

Probability and combinations

Aliens landed on Costco to buy some groceries and donate blood. The American president is sending an 8-member committee team of scientists to investigate this. His choices include 7 Biologists, 10... more
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Probability

08/20/20

Average test score for random guesses on multiple choice.
Suppose there is a test with ten multiple choice questions. Each question has four options (and only one correct answer).What is the average score of the test?I know that there are 4^10 (= ~ 1M)... more
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Probability

08/20/20

Help on probability problem
A manufacturing machine has a 4% defect rate. If 4 items are chosen at random, what is the probability that at least one will have a defect?
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Probability

08/20/20

Assistance on probability
A business has Brand A, Brand B and Brand C of the same product. Market research has shown that 43% of costumers that purchase this product will choose Brand A. An organization conducts a poll... more
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Probability

08/20/20

Assistance on probability
A business has Brand A, Brand B and Brand C of the same product. Market research has shown that 43% of costumers that purchase this product will choose Brand A. An organization conducts a poll... more
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08/20/20

Data Management Probability Questions
1. The following letters are rearranged BROWN. What is the probability that the BRO are together and in this order2.Aliens landed on Costco to buy some groceries and donate blood. The American... more
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Probability

08/20/20

Find the indicated probability.

Find the indicated probability.Refer to the table which summarizes the results of testing for a certain disease. If one of the results is randomly selected, what is the probability that it is a... more
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Probability Statistics Mathematics

08/19/20

questions are in the description

Two standard dice are rolled. What is the probability that a sum less than 7 or is divisible by 3? Consider the following: The probability that any teacher has a car is 0.72. The probability that... more
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Probability Statistics Quant

08/19/20

Which test to use?
HI,I am fairly new to stats and need some help. I can't seem to determine which test to use in a certain question. As soon as I see unknown questions i dont know which test to use. T test, chi... more
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Probability

08/18/20

Solve the following PROBABILITY question;
1000 students undertook a field trip to a Malaria prone area, and on their return were subjected to Malaria testing. The following information was obtained: 39% of the group are Male students and... more
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Probability

08/18/20

Monica is making a platter of four types of cheese and four types of crackers. She has seven different cheeses and six different crackers. In how many ways can Monica make the platter?

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Probability

08/18/20

Probability: What is the probability that at least 8 families adopt their puppy from a shelter?
30% of puppies come from rescue shelters. Ten random families were surveyed about where they recently adopted their puppy from.
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Probability

08/18/20

What type of distribution for epsilon? can I generate observations for epsilon ?
$X$ has zero truncated poission distribution ($\lambda$)then pmf is $f(x)=\frac{\lambda^x}{(e^\lambda-1)x!}$and the probability generating function is $\phi_X(s)=\frac{e^{\lambda... more
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