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At a liberal arts college, 90% of the freshmen are enrolled in English 105, 80% are enrolled in Mathematics 101 and 5% are enrolled in Mathematics 101 but not in English 105. A freshman is randomly selected.
Studies have shown that humans complete a 1 mile run in an average of 12.2 minutes. There is a separate group of 30 who complete a 1 mile run with an average of 8.67 minutes with a standard deviation of 0.33 minutes.
For the following, describe the target population, sampling frame, sampling unit and observation unit. Is there any selection bias or inaccuracy of responses?
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 much?
Using the table below, compare and contrast the main differences between two quantitative research designs and two qualitative research designs.
A fast-food restaurant sells hamburgers and chicken sandwiches. On a typical weekday, the demand for hamburgers is normally distributed with a mean 313 and a standard deviation 57; the demand for chicken sandwiches is normally distributed with a m..
The formula h(s) = -32s2 + 400s + 8 models a rocket's height, h, in feet, s seconds after launching. Find the height, h(s), five seconds after launch.
compute the slope of the regression line for the data belowx 3 0 3 5 3y 7 4 -2 2
(a) Find the lower and upper quartiles, median, and interquartile range. Check for any outliers and interpret. (b) Construct a box plot and interpret. (c) Are there any outliers?
White blood cell counts for a group of volunteers before being innoculated, and white blood cell counts for a second group of volunteers after being innoculated.
q1 if light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500
Unfortunately, the Dispatcher is down and Sharon is seeking your assistance in helping her set up an Excel spreadsheet to help her determine the routes.
1. suppose 2 of cotton fabric rolls and 4 of nylon rolls contain flaws. of the rolls used by a manufacturer 70 are
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