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The probability that an American CEO can transact business in a foreign language is 20%. Ten American CEO s are chosen at random. WHat is the probability that at least two, but no more than five can trasact business in a foreign language?
sixty percent of the students at a particular community college are female. if 12 students at that community college
First, describe in your own words (no direct quotes, please) what a dummy variable is and its purpose in regression analysis. Secondly, provide an example of where you might use a dummy variable from your own professional experience.
1.an inventor claims that a device increases gas mileage by 4. a test of the device was done by randomly selecting 10
the journal of research in crime and delinquency has published a study on the situational characteristics of crimes. in
in order to determine an interval for the mean of a population with unknown standard deviation a sample of 61 items is
Suppose the budget has the support of 52% of the voters. What is the probability that the newspaper's sample will lead it to predict defeat?
steam enters an adiabatic nozzle at 4000 kpa 440 degrees celsius with a velocity of 75 ms. at the exit the pressure and
In Texas, 1991, the weights of babies, the mean birth weight for all babies is 3369 grams, with a standard deviation of 581 grams, (454 grams = 1 pound). Looking at a baby that weighed 16.1 lbs at birth: What would his Z-score be when compared to ..
A woman wrote to DearAbby and claimed that she gave birth 308 days after a visit from her husband, who is in the Navy. Lengths of pregnancies have a mean of 268 days and a standard deviation of 15 days
The cholesterol levels of a population have a normal distribution with a mean of 160 and a standard deviation of 30 how you I find the percentage of the population with cholesterol levels above 200.
While 290 out of 400 in Batavia preferred the same flavor. To test the hypothesis that there was no difference in preferences in the two towns, what is the alternate hypothesis?
twelve different video games showing substance use were observed and the duration times of game play in seconds are
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