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Cars coming along Magnolia Street come to the fork in road and have to select either Willow Street or Main Street to continue. Suppose that number of cars which arrive at fork in unit time has Poisson distribution with parameter = 4. Car arriving at fork chooses Main Street with probability 3/4 and Willow Street with probability 1/4. Let X be random variable which counts number of cars that, in given unit of time, pass by Joe's Barber Shop on Main Street. Determine the distribution of X?
Test the proportions of yellow fire trucks have a significantly lower accident rate.
Find the mean ______________ and the standard deviation _____________
Correlation between the two variables - Evaluate the value of the correlation coefficient.
In analyzing two independent small samples you notice that the standard deviation for both samples are the same. How does this affect the S2p (the pooled variance)? Explain your answer.
Here is my data: these are the wages for women with a 2 yr degree, $11,702, $24,509, $34,746, $35,185 (median of $29,627) These are the wages for women with a 4 yr.
To decrease the amount of time it takes to deliver packages, a delivery company purchased computer software that finds the optimal route for making deliveries based upon the input of the package destinations.
Last week Sarah had exams in Math and in Spanish. On the math exam, the mean was m = 40 with s = 5, and Sarah had a score of X = 45. On the Spanish exam, the mean was m = 60 with s = 8 and Sarah had a score of X = 68. For which class should Sara e..
A lumber company has claimed that the standard deviation for the lengths of their 6 foot boards is 0.5 inches or less. To test their claim , a random sample of 17 six-foot boards is selected
Make a probability distribution chart using reduced fractions to show the following information: The chart below shows the number of committee members who attended a meeting.
Find out the forecast value utilizing three month moving average method, weighted moving average method, exponential smoothing and regression methods.
Test the overall significance of the regression model at α = .05 level. Please use the six-step hypothesis-testing framework we employed in class, and write out the last three steps in this table:
How large a sample size will need to be selected if we wish to have a 99% confidence interval with a margin for error of .10 oz?
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