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In the linear regression model, it was found that the 90% confidence interval for the regression coefficient B is (1.5,9.3). What can you say, if anything, about the p-value of test of hypotheses Ho:B=0 vs. Ha: B does not equal 0?
State one referenced hypothesis including the three variables (FA as an IV, age as the covariate and RS as the DV)
Jim owns three real estate offices in Anytown. He has decided to open one more office, but cannot decide between hometown or uptown as the towns where he wants to locate.
Determine regression line for predicting January temperature from latitude.
an electronics company wants to compare the quality of their cell phones to the cell phones from three competitors.
A study of 200 commercial firms revealed the data below. What is the probability that a particular firm will have 1 million or more in income after taxes?
The company investigating the golf balls is not satisfied with the limited analysis that it has done. The managers have collected a good deal of data, but they are not sure how to look at them and interpret the output.
find the contribution margin per haircut. with the barbers compensation at a fixed cost what are the totals?find the
Construct a 95% confidence interval for the mean HAV angle in the population of all such patients and construct a histogram and assess the shape, center, and spread. Remove the patient(s) that who are outliers.
What proportion of children 10 to 15 would be classified as hyperlipidemic(assume that hyperlipidemia is defined as a total cholesterol level over 200?
Does the regression equation account for a significant portion of the variance in the cognitive scores? Use a=.05 to evaluate the F-ratio.
Suppose we sample five boys and five girls, and find that the average height of the boys is 0.5 inches more than the average height of the girls.
suppose you work for a company that manufactures electronics. the development analysts estimate that 2 of their
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