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If data containing two variables X and Y (with X as the only predictor variable for Y) were standardized, the slope of a best-fit regression line would equal:
A) 1
B) a (intercept when y is regressed onto x)
C) Y
D) r (correlation between x and y)
A product sold by Home Depot, Inc., with an annual demand of 1000 units has Co = $25.50 and Ch = $8. The demand exhibits some variability such that the lead-time demand follows a normal probability distribution
the mean of sample a is significantly different than the mean of sample b. sample a 59 48 74 62 87 73 sample b 53 67 78
Find a 99%. confidence interval for the difference between the average grades for the two courses. Assume the populations to be approximately normally distributed with equal variances.
Assume the shopping time followed an approximately normal distribution. Use a 5% level of significance to test the claim that the average shopping time foe women with children in Carson mall is higher than the national average for this type of sto..
This sample has a mean weight of 5.03 Kg and a standard deviation of 0.21 Kg. Can we calculate that the mean weight produced by the machine has increased? Use 5% level of significance.
Assume you randomly sample one mouse from the colony. The probability his age will be between 55 and 70 days is?
Find out z values for 29 and 34 hours. What percent of garages take between 32 hours and 34 hours to erect?
According to the National Association of Homebuilders, the average life expectancies of a dishwasher and a garbage disposal are about the same: 10 years.
in a poll conducted by the nanos research on may 1 2011 38.7 of n 702 decided voters supported the conservative.a find
Use an alpha level of .01 and test the hypothesis that the two methods are producing the same mean.
Determine the probability of randomly selecting a person graduating with Master's degree who didn't major in Education.
q1. a manufacturing company measures the weight of boxes before shipping them to the customers. if the box weights have
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