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You want to make five-letter codes that use the letters A, F, E, R, and M without repeating any letter. What is the probability that a randomly chosen code starts with A?
What can covariance be used for?
The first sample mean distribution is based on samples of size n=100 and the second is based on sample of size n=225. Which sample mean distribution has the smaller standard error? Why?
How do you find the quartiles of a box and whisker plot?
A continuous random variable X has the p.d.f. F(x)={Ax(6-x)² if 0
What is the probability that, if you roll a balanced die twice, that you will get a "1" on both dice?
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