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Suppose that X1 = Gamma(a= 2, b = 3), X2= Gamma( 3, 3), and X3 =Gamma( 1, 3) are independent. Here B denotes the scale parameter and a denotes the shape parameter. Determine the distribution of Y = X1 + X2 + X3. Show work please
The statistics showed that students studied an average of 20 hours per week with a standard deviation of 10 hours. What is the probability that a sample mean would exceed 20 hours per week?
Find the margin of error for the 95% confidence interval used to estimate the population proportion. In a survey of 7100 T.V. viewers.
A farmer in Iowa owns 45 acres of land. He is going to plant each acre with wheat or corn. Each acre planted with wheat yields $200 profit, requires 3 workers, and requires 2 tons of fertilizer; each with corn yields $300 profit, requires 2 worker..
Carry out a significance test for the hypothesis that the two tests have the same population mean. Give the P-value and state your conclusions.
Suppose you bid $12000. What is the probability that your bid will be accepted?
A student is taking a multiple choice exam in which each question has four choices . Assume that the student has knowledge of a correct answer to any of the questions.
1. automobiles arrive at the drive-thru window at the downtown fort mcmurray post office at the rate of 4 every 10
A government survey conducted to estimate the mean price of houses in a metropolitan area is designed to have a margin of error of $10,000.
If the sum of squares total is 800 and the sum of squares error is 170. What is the r-squared value?
what is the sample variance and the estimated standard error for a sample of n 4 scores with ss
In a recent year, 11th grade New York public school students taking an English test produced test scores that were normally distributed with a mean of 81 and a standard deviation of 6. Let x be a random variable that represents a test score.
Describe the purpose of transforming raw scores into standard scores. Describe what "normal distribution" means.
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