5,341 Answered Questions for the topic probability

Probability Statistics

03/12/23

Suppose you have 5 textbooks - 2 math (Calculus and Prob & Stats), and 3 engineering (EE, ME, and CE).
(a) In how many ways can the books be arranged on a shelf? (b) In how many ways can the books be arranged on a shelf if the math books should be to the left of the engineering books? (c) If you... more
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Probability

03/12/23

A byte is a sequence of eight bits, where each bit is either 0 or 1. How many different bytes are there?
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Probability

03/09/23

Statistics - Probability
Suppose a jar contains 17 red marbles and 37 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that both are red.  
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Probability Statistics

03/09/23

What effect does the circled point have on the slope and y-intercept of the least-squares regression line?
A guidance counselor wants to determine if there is a relationship between a student’s number of absences, x, and their grade point average (GPA), y. The data that were collected are displayed in... more
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Probability Statistics

03/09/23

The weight (in pounds) and height (in inches) for a child were measured every few months over a two-year period. The results are displayed in the scatterplot
The weight (in pounds) and height (in inches) for a child were measured every few months over a two-year period. The results are displayed in the scatterplotThe equation ŷ = 17.4 + 0.5x is called... more
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Probability

03/08/23

Central Limit Theorem
A population of values has a normal distribution with   μ=22.4 and σ =12.9 . You intend to draw a random sample of size N=187.  Please show your answers as numbers accurate to 4 decimal... more
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Probability Statistics

03/08/23

statistics probability
The Acme Company manufactures widgets. The distribution of widget weights is bell-shaped. The widget weights have a mean of 62 ounces and a standard deviation of 7 ounces.Use the Empirical... more
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Probability

03/07/23

Central limit theorem
A population of values has a normal distribution with mu = 78.9 and sigma = 48.5 . You intend to draw a random sample of size n = 65 Please show your answers as numbers accurate to 4 decimal... more
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Probability

03/07/23

n 4) There are eight nickels and eight dimes in your pocket. You randomly pick a coin out of your pocket and then return it to your pocket. Both times the coin is a nickel.
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Probability

03/07/23

a basket contains eight apples ans eight peaches you randomly select one peice of fruit and eat it then you randomly select another peice of fruit. both peices of fruits are apples
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Probability Statistics

03/07/23

Which of the following would linearize the data for volume and time?
Water is poured into a large, cone-shaped cistern. The volume of water, measured in cm3, is reported at different time intervals, measured in seconds. The scatterplot of volume versus time showed a... more
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Probability Statistics

03/05/23

Please help thank you!! Standard Deviation

In a neighborhood donut shop, one type of donut has 410 calories, six types of donuts have 520 calories, five types of donuts have 340 calories, three types of donuts have 500 calories, and six... more
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Probability Math Business Statistics

03/05/23

Basic Business Statistics Concepts and Applications 14th Editon by Mark Berenson, David Levine, Kathrlyn Szabat, David Stephan (Textbook Question)
problem 14.8) Nassau County is located approximately 25 miles east of New York City. The data organized and stored in GlenCove include the fair market value (in $thousands), land area of the... more
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Probability Statistics

03/04/23

Determine whether the distribution represents a probability distribution, explain your answer

X 1 2 3 5P(×) ¼ ⅛ ¼ ⅛
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Probability

03/01/23

You have a jar of 20 jellybeans, and 4 are red. Which fraction represents the probability that you will pick a red jellybean out of the jar?
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Probability Statistics

03/01/23

Please help me what option and how?
A carnival game is designed so that approximately 10% of players will win a large prize. If there is evidence that the percentage differs significantly from this target, then adjustments will be... more
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Probability Statistics

03/01/23

Help me complete to a complete answer
It is claimed that 75% of puppies are house-trained by the time they are 6 months old. To investigate this claim, a random sample of 50 puppies is selected. It is discovered that 42 are... more
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Probability Statistics

03/01/23

Please help me solve and come to the complete answer please Hint (complete answer) Thank you!
Simone read online that the failure rate in Arizona for the first attempt of the written driver’s test is 60%. Simone thinks the Arizona rate is less than 60%. To investigate, she selects an SRS of... more
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Probability

03/01/23

please solve a and b
A manufacturer produces x% of defective light bulbs on the average. Each item is inspected before being put on the market. Items that are classified as good are put on the market and those... more
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Probability

03/01/23

Nate tossed a 6 sided die 40 times. The results are in the table below. Which number has the experimental probability of 7/40
Nate tossed a 6 sided die 40 times. The results are in the table below. Which number has the experimental probability of 7/40
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Probability Math

03/01/23

probability question

Question 4 In a café, coffee and tea are on average sold at 3 cups and 1 cup respectively every 5 minutes. Let C and T denote the number of cups of coffee and tea sold in an hour interval. (a)... more
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Probability

02/28/23

probability question

Rachel, Sam and Thomas interviewed at another company for another position. The probabilities that each of them is hired for the role are now given by x, 2x and 4x respectively. It can be assumed... more
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Probability

02/28/23

Probability with replacement

A bag contains 8 black balls,3 red balls, and 9 white balls. if three balls are drawn at random with replacement. what's the probability that (a) the balls are all black (b) two balls are black and... more
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02/27/23

Expected Value Variance Please Help!!
Let 𝑋 be a random variable with density𝑓(𝑥)={𝐶(4𝑥−𝑥^2) , 0≤𝑥≤3 0 , otherwisewhere 𝐶∈𝐑 is some constant.C = 1/9E[X] = 1.75Find E[x^2] (the second order moment of 𝑋) = ??Find var[𝑋], the variance... more
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02/24/23

Business Statistics - Probability
The speed with which utility companies can resolve problems is very important. GTC, the Georgetown Telephone Company, reports it can resolve customer problems the same day they are reported in 70%... more
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