Test Bank for Statistics for the Behavioral Sciences 9th Edition Gravetter Wallnau 1111830991 9781111830991 Download full test bank at: https://testbankpack.com/p/test-bank-for-statistics-for-the-behavioralsciences-9th-edition-gravetter-wallnau-1111830991-9781111830991/
Gravetter Chapter 06 Student: ___________________________________________________________________________ 1. Which of the following are requirements of a random sample? A. Every individual has an equal chance of being selected. B. The probabilities cannot change during a series of selections. C. There must be sampling with replacement. D. All of the other three choices are correct.
2. A jar contains 10 red marbles and 30 blue marbles. What is the probability of randomly selecting a red marble from the jar? A. 10/30 B. 10/40 C. 1/10 D. 1/40
3. A jar contains 10 red marbles and 30 blue marbles. A random sample of n = 3 marbles is selected from the jar. If the first two marbles are both blue, what is the probability that the third marble will be red? A. 10/37 B. 10/38 C. 10/40 D. 8/38
4. What proportion of a normal distribution is located in the tail beyond z = 2.00? A. 0.9772 B. 0.0228 C. 0.4772 D. 0.0456