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1. For the following pairs of points, verify that the least square regression line is Yˆ = 1.8X -8.5.
X: 5, 8, 9, 7, 14Y: 3, 1, 6, 7, 19
2. Compute the residuals using the results from problem 1. Verify that if you square and sum the residuals, you get 47, rounding to the nearest integer.
The (independent) visitors of a certain Web site may be divided into two groups: those who arrived on this site voluntarily (type I) and those who arrived there by chance or by error (type 11).
A sample of 35 different HR departments found that employees worked an average of 240.6 days a year. If the population standard deviation is 18.8 days
can we conclude that the mean assembly time for this component exceeds 3 minutes? What error could be made in this case? Describe it in words.
Discuss contingencies and how they are reported on financial statements. What conditions must be met before a contingency can be charged against income?
a cement manufacturer claims that concrete prepared from his product has a relatively stable compressive strength and
Construct a 95% confidence interval for the difference M1-M2 between the mean spending on prescription allergy relief medication (M1).
(a) Find the expected value (in dollars) of the amount won by one entry. (b) Find the expected value (in dollars) if the cost of entering this sweepstakes is the cost of a postage stamp (34 cents)
the faculty and staff at dana-farber cancer institute in boston are required to undergo a tuberculosis test each year.
discuss the importance of identifying an appropriate distribution of the quality characteristic in process capability
an american roulette wheel has 38 slots 18 are red 18 are black and 2 are green. let r be the number of spins until you
The president of the American Insurance Institute wants to compare the yearly costs of auto insurance offered by two leading companies.
Log transform a variable... if the values are too big. if the residuals (error) get bigger for bigger values of the variable.
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