813 Answered Questions for the topic Probability & Statistics
Probability & Statistics
04/30/16
probability
question:
a film distribution manager calculates that 7% of the films released are flops. If the manager is accurate, what is the probability that the proportion of flops in a sample of 638...
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Probability & Statistics Probability
04/30/16
Question in description
The probability that a randomly selected 2 year old male garter snake will live to be 3 years old is 0.83344. What is the probability that two randomly selected 2 year old male garter snakes will...
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Probability & Statistics Applied Stats
04/30/16
What is the population?
Results are based on telephone interviews conducted February 29th- March 15, 2016, with a random sample of 3,072 U.S college students, aged 18-24, who are currently enrolled full time and four-year...
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04/29/16
find the probability of guessing correctly at least 6 of the 10 answers on a true or false examination.
the correct answer is 193/512
please explain and show all working. thanks very much!
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Probability & Statistics
04/29/16
If 20% of the group of 200 receive a free pass to Walt Disney World, what are the odds of receiving a free pass to Disney?
Probability
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Probability & Statistics
04/29/16
How many distinct license plates of this type are possible
A typical West Virginia license plate follows the pattern 4PC609, where the first, fourth, fifth, and sixth characters may be any of the decimal digits 0 through 9 inclusive, and the second and...
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Probability & Statistics
04/27/16
The mean age at which men in the United States marry for the first time follows the normal distribution with a mean of 24.1 years. The standard deviation of the
The mean age at which men in the United States marry for the first time follows the normal distribution with a mean of 24.1 years. The standard deviation of the distribution is 2.5 years. For a...
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04/24/16
If a marble is chosen at random, which of the conditional probabilities is larger, P(red|large) or P(large|red)? URGENT
A jar contains 11 large red marbles, 4 small red marbles, 8 large blue marbles, and 6 small blue marbles. If a marble is chosen at random, which of the conditional probabilities is larger,...
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04/21/16
Math probability
the probability that a student is in honors given that he or she is in mrs rollins class is 28/51. the probability that a student is not in ms rollins class given that he or she is not in honors is...
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04/20/16
Expected Value - buyer
You can buy a lottery ticket for $1000. The odds are as follows:
1 in 10 tickets will pay $500.
1 in 100 tickets will pay $1000.
1 in 1000 tickets will pay $200,000.
1 in 10,000 tickets will...
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04/20/16
Expected Value – seller
An insurance company sells a policy for $1000. Based on past data, an average of 1 in 100 policyholders will win a $20,000 claim on a policy, an average of 1 in 200 policyholders will win a $50,000...
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04/20/16
Probability calculations
Probability calculations – exactly one occurrence You are looking for a job. Eventually you get six interviews. In each case you are one of four final candidates for the respective job. Let us...
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04/20/16
Probability Question
The barton Company manufactures automobile charge indicator gauges. Under test conditions, these gauges are supposed to read 0 volts. However, some gauges read slightly more than 0 volts and some...
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Probability & Statistics Probability
04/18/16
help with question
Acme Airlines flies airplanes that seat 100 passengers. From experience, they have determined, on average, 84% of the passengers holding reservations for a particular flight actually show up for...
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04/18/16
Probability
In a b olt factory 30%, 50% and 20% of pro duction is done on machine s I, I I and I I Iresp ectively. It is known that 4%, 3% and 5% of the output of these resp ective machinesis defective.(a)...
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04/15/16
A game involves rolling a fair six-sided die. If the number facing upward on the die is a whole number multiple of three, the player wins an amount equal to the
A game involves rolling a fair six-sided die. If the number facing upward on the die is a whole number multiple of three, the player wins an amount equal to the number on the die times $20. If the...
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Probability & Statistics Maths
04/14/16
probability
A certain medical disease occurs in 5% of the population. A simple screening procedure is available and in 3 out of 10 cases where the patient has the disease it provides a positive result. If the...
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04/14/16
Venn diagrams
The company is conducting a survey to determine the spread of two strains of viruses (type A and type B) in a certain wing of a hospital. Out of 450 patients, 267 tested positive to virus A253...
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Probability & Statistics
04/13/16
A random sample of 420 new Ford trucks showed that 105 required repairs within the first warranty year.
What is the estimate for the probability that a new Ford truck will need repairs within the first warranty year?
Select one:
a. 105b. 0.75c. 315d. 0.25
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Probability & Statistics
04/13/16
In a club there are 10 women and 7 men.
In a club there are 10 women and 7 men. A committee of 6 women and 4 men is to be chosen. How many different possibilities are there?
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04/11/16
probability / statistics question?
say that you were taking a multiple choice test and the teacher says you only have 30 seconds left. however, you have 5 questions left that you haven't answered. you have no time to even look at...
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04/11/16
Probability Question
We have a CDF
{0 if y< 0
F(y) = {Y^4 if 0<= y <= 1
{ 1 if y>1
The Z transformation is:
Z = 3Y^2 + 2,2 ≤ z ≤ 5
My question is: I dont...
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Probability & Statistics
04/04/16
Probability & Statistics
1. A family has n > 0 children with probability αp^n, where α≤p/(1-p). (a) What is the probability that the family has no children? (b) If each child is equally likely to be a boy or a girl...
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Probability & Statistics Probability Problems
04/04/16
Twenty-five percent of Americans are college graduates. You survey a random sample of fifteen Americans.
What is the probability that: a. Exactly three of them are college graduates? b. Between two and five (inclusive) of them are college graduates? c. More than seven of them are college graduates?
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04/03/16
Normal Distribution: Statistics Question
Suppose birth weight is normally distributed with a mean of 7.5 pounds and a standard deviation of 1 pound. What is the probability that out of 5 randomly selected babies, exactly 4 of them are...
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