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What is the value of y' when x = 3, if the equation of the regression line is y' = 23.1 - 3.8x ?
A. 4.73
B. 5.29
C. 34.5
D. 11.7
research shows that the life time of everlast automobile tires is normally distributed with a mean value of 70000
The following frequency distribution shows the time (in minutes) that a sample of students uses the computer terminals per day. Compute the coefficient of variation.
Using given data table, find out midpoint for class with greatest frequency?
Tthe true population mean when different samples of the same size are taken. Note that the variability of the sample mean is LESS than that of individual observations Does this makes sense?
A student heard that the average household watches 26.4 hours of t.v. per week, with a stand.dev. of 2.3 hours. He decided to run his own experiment and found that the average for the 58 people he surveyed was 27 hours. a) state H0 and H1 b) calculat..
The manufacturer of the ColorSmart-5000 television set claims that 95 percent of its sets last at least five years without needing a single repair.
are your finances buying habits medical records and phone calls really private? a real concern for many adults is that
Does it seem to you that people tend to be absent more on some days of the week than on others?
A dietitian investigated whether apples washed in hot water or in cold water turned brown at different rates when exposed to air. She took 13 random apples and cut each in half.
Calculate the difference in the average "clutter" between network and TV.
Enzyme immunoassay (EIA) tests are used to screen blood specimens for the presence of antibodies to HIV, the virus that causes AIDS. Antibodies indicate the presence of the virus.
The weights (in pounds) of a sample of five boxes being sent by UPS are: 12, 6, 7, 3, & 10.
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