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Statistics & Probability Fundamentals Test
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Statistics & Probability Fundamentals Test
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25 Questions

1. Let X follow a Poisson distribution with a rate parameter of 7. What is Var(X)?
2. Let A be a normal distribution with a mean of 3 and B be a normal distribution with a mean of 17. What is the mean of A+B?
3. What is the mean of a standard normal distribution?
4. A normal distribution generally takes the form of _______.
5. Suppose X and Y are independent random variables. The variance of X is equal to 16; and the variance of Y is equal to 9. Let Z = X - Y. What is the standard deviation of Z?
6. In hypothesis testing
7. Where would the outliers be if a distribution had a skewness of 0?
8. When does a Type I error occur?
9. Which plot is best use to display the relationship between a continuous dependent variable against a continuous independent variable
10. Which of the following is a characteristic of an F-distribution?
11. Suppose a fair die is tossed twice. What is the probability of rolling two fours?
12. Over the last 360 days of winter in Raleigh
13. Chi-square is used predominantly in _______ statistics.
14. How do you calculate the Z-Score?
15. The Square of the standard deviation is called
16. The preseason odds that the Hartford Whalers will win The Stanley Cup Championship are 1/4
17. The variance of X is 15. Y=X+5. What is the Variance of Y?
18. Find the z-score: mean = 6
19. Which of the following is an example of mutually exclusive events?
20. What is the probability that a coin will land on the same side when flipped twice?
21. What is the coefficient of variation?
22. What is the median of the following 5 numbers? 10
23. P(A|B)=.6 P(A)=.3 P(B)=.4 What is P(B|A)?
24. What is the probability of rolling a fair dice and getting an even number and flipping a fair coin getting a head?
25. Which one of these variables is a binomial random variable?

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