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The linear regression equation was relating a regressor variable, x, and a response, y. The slope was found to be 7 with intercept of 20 . What is the predicted value when x = -3?
A. -1
B. 53
C. -53
D. 1
According to Chebyshev's Theorem, how many students scored between 57 and 93? Assume that the distribution is normal. Based on the Empirical Rule, how many students scored between 57 and 93?
The Niko Electronics Company has just manufactured 5000 CDs, and 3% are defective. If 10 of the CDs are selected and tested, what is the probability that the entire batch will be rejected?
For a random sample of 36 items and a sample mean of 211, compute a 95% confidence interval for µ if the population standard deviation is 23.
The Spanish patients, two men and two women, were elderly and very ill. All four had undergone routine dialysis at the Hospital de la Princesa. Soon after, they began sweating and vomiting, some of them in excruciating pain. They died within a few..
3 cards are randomly selected without replacement from an ordinary deck of 52 playing cards. Compute the conditional probability that the first card selected is a spade, given that the second and third cards are spades.
the bailey agency is studying long distance calls made from there office. they find that the length of calls follows a
the number of robberies in each precinct in 2009 is what level of measurement?1. none2. nominal3. ratio4.
a professor gives tests that are either hard medium or easy. if she gives a hard test her next test will be either
Is there a more efficient way to design the experiment to answer the same question? In other words, is there a better way to make use of this data?
A manufacturer of car batteries claims that his batteries will last, on average, 3 years with a variance of 1 year. If 5 of these batteries have lifetimes of 1.9, 2.4, 3.0, 3.5, and 4.2 years
Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the following questions. What is the likelihood the sample mean is at least $25.00?
Suppose that this is a simple random sample of adult residents of Maine.
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