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Consider an x-bar chart where the x-bar statistic is normally distributed and an associated x-bar control chart exists. If the process is in statistical control then what is the type 1 error rate of
Many, many snails have a one-mile race, and the time it takes for them to finish is approximately normally distributed with mean 50 hours and standard deviation 6 hours.
A machine that cuts corks for wine bottles operates in such a way that the distribution of the diameter of the corks produced is well approximated by a normal distribution with mean 2 cm and standar
For a binomial probability function with P = 0.4 and n = 20, find the probability that the number of successes is equal to 9 and the probability that the number of successes is fewer than 7.
In how many ways can 12 indistinguishable muffins and 1 cookie be distributed among three children in such a way that each child gets at least one piece of snack?
Determine the number of ways to distribute 10 identical apples, 1 mango, and 1 pear to 4 hungry students so that each student gets at least 1 fruit, and the mango and pear go to different students.
After a pretty successful life financially, you decide to give away your fortune to your five children. Your fortune amounts to $100, 000, 000. You want to divide this amount in chunks of $1, 000, 0
How will increasing the sample size without changing the level of confidence affect the width of a confidence interval for a population mean? Assume the population standard deviation is unknown and
Suppose that the proportion of fatal single-car accidents that involve alcohol consumption on the part of the drive is 60%. If the records of fatal single-car accidents in a geographical area are ex
What is the probability that the space vehicle will have a successful launch? Given that the space vehicle had a successful launch, what is the probability that exactly two of the C-computers were fu
Suppose that the average weekly earnings for employees in general automotive repair shops is $450, and that the standard deviation for the weekly earnings for such employees is $50.
A certain disease is found in one person in 5000. If a person does have the disease, the test will show a positive result 93% of the time. If a person does not have the disease, the test in 1 out o
Givien a customer missed a monthly payment, compute the posterior probability that the customer will default? The bank would like to recallits credit card i the probability that a customer will defau
Then he flips the coin 2 more times. What is the expected number of heads across all 4 flips and the variance of the number of heads across all 4 flips?
He selects one of the coins at random, and when he flips it, it shows heads. Suppose that he flips the same coin a second time and again it shows heads. Then he flips the coin 2 more times. What is
What is the prior probability of the bid being successful ( that is, prior to the request for additional info)? What is the conditional probability of a request for additional information given that t
Consider the following data on the number of beers consumed by 10 football fans during a recent game: 4, 2, 6, 3, 5, 0, 2, 1, 8, 2.
Below are monthly rents paid by a sample of students. Rent: 705, 715, 730, 720, 690, 300, 1550, 2190.
Suppose X1 and X2 are independent random variables, each uniformly distributed over the set {±1}; that is, each Xi takes the value -1 with probability 1/2 and the value 1 with probability 1/2
Sixty Percent of college students weigh between 150-210 lb. Identify Degree of Confidence, level of confidence, significance level, and confidence interval.
What is the probability that you are dealt two pairs? What is the probability that you are dealt a three of a kind or 4 of a kind? Note: three of a kind means that the other 2 cards are NOT a pair.
For a population having a mean of 10 and a variance of 30, find the probability that a sample size of 9 taken at random from this population will have a mean between 8 and 13.
Let S be the event that a randomly chosen male age 18-24 is Republican. Let C be the event that a randomly chosen male age 18-24 is African American. Given P(S) = 0.22, P(C) = 0.18, and P(S ? C) = 0