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Zombies eat, on average, 5 brains per day. Assume the actual number of brains eaten per day follows the normal distribution with a standard deviation of 0.29 brains. What is the probability that a zombie will eat exactly 3.2 brains tomorrow?
You've been recently hired as a marketing analyst in an advertising agency. You are assigned the task of assessing the impact of direct marketing promotions.
These can have a large impact on tenure and promotion decisions at many institutions. One particular instructor had ratings in 3 courses in one semester as given by the table below for the statement "The instructor is an excellent teacher.
What is meant by Econometrics, Regression analysis and Disturbance or error term?
r. Patton is a professor of English. Recently she counted the number of misspelled words in a group of student essays. She noted the distribution of misspelled words per essay followed the normal distribution with a standard deviation of 2.44 word..
Adult men have weights that are normally distributed with a mean of 172 lb and a standard deviation of 29 lb. Find the probability that the mean weight of the men in the sample is between 170 and 175 lb.
543 people were selected at random from a large population. 505 of them said they had the internet installed on their
the size of fish in a lake follows a normal distribution with mean m 1 lb 4 oz and standard deviation s 3 oz . fish
a manufacturer of light bulbs advertises that on average its long-life bulb will last more than 5000 hours. to test the
What percentage of men are too tall to fit through a standard doorway without bending, and what percentage of women are too tall to fit?
According to the data from the College Entrance Examination Board, scores on the SAT-I test have a mean of 1017, and Q1 is 880.
You took a sample of your expenses for 20 weeks and found that the average is $285 and the standard deviation for the sample is $25. Set up your null and alternative hypothesis for testing whether your cists are different and do the analysis using..
financial analysts like to use the standard deviation as a measure of risk for a stock. the greater the deviation in a
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