Exam+2+stats+extra+creditt

Exam+2+stats+extra+creditt - PSY B 305 Exam 2 Page 1 NAME:_...

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PSY B 305 Exam 2 Page 1 NAME:__________________________________________________________ True/False Indicate whether the statement is true or false. ____ 1. A random sample results when each possible sample of a given size has an equal chance of being selected. ____ 2. If an event is certain to occur, its probability of occurrence equals 1.00. ____ 3. If P >Q, the binomial distribution will be symmetrical. ____ 4. If P = 0.30 and Q = 0.67, the binomial distribution does not apply. ____ 5. If H 0 is false, and we retain it, we have made a Type II error. ____ 6. If alpha is made more stringent, beta increases. ____ 7. The sampling distribution of the mean is always normally distributed. ____ 8. The critical region for rejection of H 0 is the area under the curve that contains all the values of the statistic that allow the rejection of H 0 . Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 9. If A and B are mutually exclusive and exhaustive, then p ( A and B ) = ____. a. 1 b. 0 c. p ( A ) + p ( B ) d. p ( A ) + p ( B ) - p ( A and B ) ____ 10. A famous hypnotist performs in Meany Hall before a crowd of 350 students and 180 non-students. The hypnotist knows from previous experience that one-half of the students and two-thirds of the non-students are hypnotizable. What is the probability that a randomly chosen person from the audience will be hypnotizable or will be a non-student? a. 0.330 b. 0.340 c. 0.869 d. 0.670 ____ 11. A royal flush in poker is when you end up with the ace, king, queen, jack, and 10 of the same suit. It's the most rare event in poker. If you are playing with a well- shuffled, legitimate deck of 52 cards, what is the probability that if you are dealt 5 cards, you will have a royal flush? Assume randomness.
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This note was uploaded on 08/05/2010 for the course PSY 305 taught by Professor Johnson during the Fall '08 term at IUPUI.

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Exam+2+stats+extra+creditt - PSY B 305 Exam 2 Page 1 NAME:_...

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