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In a random sample of 200 automobile insurance claims obtained from all state insurance Company, mean=$615 and s= $135. Calculate the following intervals:
a) An interval that has at least 75% of the data within it.
b) An interval that has at least 89% of the data within it.
Please show work.
I did a study correlating net profit per location with expenditures on an in-house promotion, and got a correlation of about .15, and that was received very well.
a die is tossed 90 times. find the standard errror for the number of sixes
Given this eort, why would we want to unify the Bayesian and frequentist approaches? Why should we be interested in the prior that most frequently yields exact frequentist inference.
"I want a number that will describe the typical score on this test. Most did very well, some scored in the middle, and a very few did quite poorly."
A certain type of tomato seed germinates 90% of the time. A backyard farmer planted 25 seeds. What is the probability that exactly 20 germinate?
Twelve randomly selected mature citrus trees of one variety have a mean height of 13.8 feet with a standard deviation of 1.2 feet, and 15 randomly selected mature citrus trees of another variety have a mean height of 12.9 feet with a standard devi..
suppose we have a set of 100 x y points. if we multiply all of the xs by 10 thena. the mean and standard deviation of
Find the linear regression model for the South Central states. How does the equation for the South Central states compare to the one you found for the North Central states?
A test of the null hypothesis H0 : µ = µ0 gives a test statistic z = -2.21. (a) What is the p-value if the alternative is HA : µ > µ0? (b) What is the p-value if the alternative is HA :µ
You are allowed to take the deviations of the data points in a sample of size n, from k numbers you select, in order to calculate the sum of squared deviations.
A precision parts manufacturer produces bolts for use in military aircraft. The specifications for bolt length are 37.50 ± 0.25 cm. The company has established an -chart and an R-chart using samples of size five.
A recent report from the American Medical Association claims that for the first time in ten years, the average salary of psychiatrists was greater than $190,000 with a standard deviation of $27,000. What is the null hypothesis for his claim?
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