5,395 Answered Questions for the topic probability

Probability

06/15/20

Suppose a survey of 20 students was taken as they walked out of the cafeteria with regards to their age. The results are listed in the table:
Q12. Suppose a survey of 20 students was taken as they walked out of the cafeteria with regards to their age. The results are listed in the table: Older than 30 30 or... more
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Probability Statistics Maths

06/13/20

binomial distribution

A fair 5-sided spinner has sides numbered 1, 2, 3, 4 and 5 The spinner is spun once and the score of the side it lands on is recorded. (a) Write down the name of the distribution that can be used... more
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Probability Math Statistics Decimals

06/12/20

z score in statistics

Find the Z score that most closely corresponds to an area of 0.379 on the left.
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06/12/20

probability in statistics

The number of hours an American adult sleeps each night follows a Normal distribution with an average of 6.9 hours per night with a standard deviation of 0.68 hours. If we randomly select one... more
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06/12/20

Probability in statistics and standard deviation

The number of hours an American adult sleeps each night follows a Normal distribution with an average of 6.9 hours per night with a standard deviation of 0.68 hours. If we take a random sample of... more
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Probability

06/11/20

You roll a 6 sided die what is p(odd) write your answer as a percentage

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Probability

06/10/20

Probability math
a) P(A or B) = p(A) + p(b)P(A) = 0.04P(B) = 0,025P(A or B) = 0,04 + 0,025 = 0,065b) Still don't know the answer to b. I hope some of you could give me the answer. and the way you came to the answer
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Probability

06/10/20

What is the probability
What is the probabilityA copy center has two copyphotos. The likelihood that the machines will require service for a random week is, after long experience, estimated P(A) = 0.040 for one and P(B) =... more
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Probability

06/10/20

What is the probability
A copy center has two copyphotos. The likelihood that the machines will require service for a random week is, after long experience, estimated P(A) = 0.040 for one and P(B) = 0.025 for the other... more
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Probability

06/10/20

this is my question, can someone help me with it .
Q‒2. A box contains 24 transistors, 4 of which are defective. If 4 are sold at random, find the following probabilities. a) Exactly 2 are defectives.b) None is defective.  c) All are defective.d)... more
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Probability

06/10/20

When you flip a biased coin the probability of getting a tail is 0.52. Find the probability of getting a head.

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Probability

06/09/20

3 plain pencils and 5 pens in first box. 4 colored pencils and crayons in second box. One item from each box selected at random. What is probability that a pen and crayon are selected

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Probability

06/09/20

whats the answer to this question?
For the set of whole numbers from 1 to 20 inclusive,Tammy knows that some numbers are divisible by 5 and some numbers are odd.She is going to write each number on a different ball and place the... more
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Probability Statistics

06/08/20

See below: Is this selection process biased?
An elementary school is having a fund raiser to add new books to the library. To encourage participation, the top twenty sellers will be placed in a drawing from which four will be selected to... more
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Probability Statistics

06/08/20

Probability and Statistics questions, type of samplings!!
our friend conducted a study on the number of calories in bottles of sports drinks. He went to his kitchen and recorded the calories of the sports drinks in the refrigerator. What kind of sampling... more
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Probability

06/08/20

how do i work this out?
. On a certain road section passed by 180 cars hourly 7% of drivers are speeding. What is the probability that a speed camera place on this section of the road for two hours captures... more
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Probability

06/08/20

what is the detailed answer for this question?
Students have been organized in two groups for Chinese language courses – 10 students in the first group and 9 in the second. 2 students in the first group and 7 in the second have prior... more
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Probability

06/08/20

The 2 events P(E) and P(F) are independent with P(E) =0.45 and P(F) =0.65. Find P(E U F)
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Probability Markov Markov Chain

06/07/20

Markov Chain Problem
An investor bought shares of a company at $30 per share. Currently the value of the share is $31. The investor will sell the shares either as soon as he makes 10% or more, or when the stock drops... more
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Probability

06/07/20

Mathematics Probability
A password is a sequence of letters (a{z) and digits (0{9). Find the number of passwords of length 10 under the constraints in (a), (b) or (c) (three separate problems). Express your answer using... more
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Probability

06/07/20

Mathematics Probability
The planner in charge of raw materials operations at a well known beer-producing company needs to obtain 5 truckloads of fresh water. The ve trucks available can go to any of 11 sources of water... more
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Probability

06/05/20

Defective Item Probability question
Suppose that a box of 15 items from a manufacturing company is known to contain 4 defective and 11 non-defective items. A sample of 3 items is drawn. Find the probability that the sample contains... more
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Probability

06/05/20

License Plate Probability Question
A license plate consists of 1 number followed by 2 letters followed by space. After the space the 3 entries can be either a number or a letter. How many license plates are possible using this... more
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Probability Math Algebra 2 Mathematics

06/05/20

Lani had a box that contained: 1 blue marble, 1 green marble, 1 purple marble, 1 yellow marble, and 2 red marbles.
Lani removed one marble without looking, and she recorded the result. She placed the marble back in the box and repeated the procedure one more time. What is the probability that Lani removed a red... more
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Probability Math Algebra 2 Mathematics

06/05/20

A baseball player, on the average, has 3 hits out of every 4 attempts to hit the ball. What is the probability that she will go hitless on the next three times at bat?
a. 1/64b. 1/4c. 27/64d. 3/4
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