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Please help with the following question
1. A company knows from their records that the mean dollar amount spent by customers in each store visit is $22.34, with a standard deviation of 14.06. They put on a promotion, mailing coupon booklets to a sample of known customers. After 2 weeks, the mean dollar amount spent by any customer redeeming a coupon (n=132) is calculated as $26.97.
a. Test if the promotion has been successful (i.e. has raised the mean spending of the target customers).
b. Give a 90% confidence interval for the mean spending of customers receiving the promotion.
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?
Find the probability that a random selected student takes neither foreign language course. (Show work and write the answer in simplest fraction form)
a. Compute the test statistic. b. Using the p-value approach at a = .10, test to see if the field of study is independent of gender.
Analyze the above output to determine the regression equation. Find and interpret β?1in the context of this problem. Find and interpret the coefficient of determination (r-squared)
Let X[k] be the location of a player after turns.-Describe the elements of the transition probability matrix, , for the monopoly Markov chain X[k].
The length of human pergnancies is aprox normally distibuted with a mean of 266 days and a standard devation of 16 days what is the probability the pregancy will last between 160 and 255 days?
Give critical test statistic and compute sample test statistic. Test null hypothesis at alpha level .01.
Test the hypothesis that the birthweight is independent of whether or not the baby survives its first year.
There is evidence that the two processes yield different average errors. Assume that the population standard deviations are equal. What is the degrees of freedom?
What is the probability that none of the next eight customers who order beer will order light beer? What is the probability that one customer will? What is the probability that two customers will?
which of the 95 confidence intervals below give you justification in thinking that your sample was drawn from a
Let X equal the number of "ones" if a fair dice is tossed two independent times by someone out in the hall. If X=x that person gives the player a bowl consisting of 10-3x red chips and 3x white chips.
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