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Suppose that an object is 10 inches long and suppose that a measuring device gives the readings 7 inches with probability 1/4, 9 inches with probability 1/4, 11 inches with probability 1/4 and 13 inches with probability 1/4. Write down all 16 possible ways that two measurements can turn out. Put a check mark by those possibilities where one measurement is above 10 and the other measurement is below 10, i.e. where high measurements tend to cancel low measurements. Use these possibilities to compute the distribution of when n = 2(i.e., find , , etc.).
An upper-level sociology class at a large urban university has 120 students, including 34 seniors, 57 juniors, 22 sophomores and 7 freshmen.
In order to test the assumption of a Poisson distribution, a random sample of 150 ten-minute intervals was taken.
The Bureau of Labor Statistics says that baggage handlers, trash haulers, and coal miners are among the occupations having the highest risk of the debilitating injury or illness. For coal miners working over the course of a year, 3.60 injuries per..
If x is a binomial random variable where n=100 and p=.1, find the probability that x is less than or equal to 11 using the normal approximation to the binomial.
Expectation and variance of a random variable and let X be a random variable with the following probability distribution:
What is the P-value of the test, assume the standard deviation is 3 years, a 95% confidence interval for the average time
Find the product of the vector of state probabilities for the preceding period and the matrix of transition probabilities.
In a certain town, 60% of adults have a college degree. The accompanying table describes the probability distribution for the number of adults
Residents of Mill River have fond memories of ice skating at a local park. An artist has captured the experience in a drawing and is hoping to reproduce it and sell framed copies to current and former residents.
An account invested in a money market fund grew from $73,329.23 to $73,627.26 in a month. What was the interest rate to the nearest tenth?
If the shop does not want to give more than 1% of its customers a free lube and oil change service, how long should the guarantee be?
Under what circumstances should a nonparametric test be used? Explain. What are the strengths and weaknesses of nonparametric tests?
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