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A study was conducted to determine whether there were significant differences between medical students admitted through special programs (such as affirmative action) and medical students admitted through regular criteria. It was found that the graduation rate was 94% for medical students admitted through special programs (based on data from the Journal of the American Medical Association).
a. If 10 of the students from special program are randomly selected, find the probability that at least 9 of them graduated.
b. Would it be unusual to randomly select 10 students from the special programs and get only 7 that graduate? Why or why not?
Why is it misleading to draw the conclusion from the test above that long-time exposure to cadmium reduces the vital capacity?
The exercise problem the following information to figure prevalence and incidence rate:
Distinct random variable
Let X be the random variable which denotes the number of saves that are made by the lacrosse goalie. Find the expected value and standard deviation of the random variable.
I believe this can be done by plotting out every 3 years average number of people working past 65 since 1997 until now and then making a predictability study as to number of people who will be working over the age of 65 in 2012.
When using dummy variables in a regression equation to model a qualitative or categorical variable, the number of dummy variables should equal to
Is there a relationship between sales and newspaper?
In a large western university, 15% of the students are graduate students. If a random sample of 20 students is selected, what is the probability that the sample contains:
A well-established power-drink dispensing machine is programmed to dispense an average of 2.02 liters into a container labled"2 liters". Actual quantities are known to be normally distributed with a standard deviation of 0.015 liters. What is the ..
No, there is not sufficient information to reject the hypothesis that the proportion of cats and the proportion of dogs that sleep more than 10 hours per day are the same because the test value -0.65 is inside the acceptance region (-1.96,1.96).
A population of scores forms a normal distribution with a mean of μ = 40 and a standard deviation of σ =12.
A company that produces an expensive stereo component is considering offering a warranty on the component. Suppose the population of lifetimes of the components is a normal distribution with mean of 84 months and standard deviation of 10 months.
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