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1. For the following data, compute the least squares regression line for predicting gpa given SAT.
SAT:
500
530
590
660
610
700
570
640
gpa:
2.3
3.1
2.6
3.0
2.4
3.3
3.5
2. Compute the residuals for the data used in the previous problem and verify that they sum to zero.
Kay Manning is a sales manager with two salespeople working for her. The ability of each salesperson to secure new accounts has historically been: Jesse Burkett can generate
In a photographic process, the developing time of prints may be looked upon as a random variable having the normal distribution with μ = 15.40 seconds and σ = 0.48 second.
Bufferin Tablets Listed below are the measured weights (in milligrams) of a sample of Bufferin aspirin tablets. What is a serious consequence of having weights that vary too
Construct a frequency distribution of the sample mean, and plot a histogram of this distribution. Use the central limit theorem to calculate and identify the sampling distri
From the fourth quarter of 1997 to the first quarter of 1998, revenues declined. What happened on a seasonally adjusted basis? From the first quarter of 1998 to the second qua
1. Develop histograms showing the distribution of rivet diameters from the original and new supplier. 2. Compute the sample means and standard deviations for the two sets of d
Now create probability-probability (p-p) plots for each variable. This output will give you additional information. Read over the Case Processing Summary. Notice that there
An airline maintenance base wants to make a change in its overhaul operation. The present situation is that only one airplane can be repaired at a time, and the expected rep
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