PSYC 290 Summer 2018 Exam 2 Name Indicate the answer choice that best completes

Question

PSYC 290 Summer 2018 Exam 2 Name Indicate the answer choice that best completes the statement or answers the question. Version 1 1. What proportion of a normal distribution is located in the body for z1.00? a.-0.8413 b. 0.8413 c. 0.1587 d. -0.1587 2. What percentage of the means of a sampling distribution fall within 2 SEM's? a. 95% b. 39% ?. 5% d, 68% 3. A sample of n - 25 individuals is selected from a population with u 80 and a treatment is administered to the sample. What is expected if the treatment has no effect? a. The sample mean should be very different from 80 and should lead you to fail to reject the null hypothesis. b. The sample mean should be close to 80 and should lead you to reject the null hypothesis c. The sample mean should be close 80 and should lead you to fail to reject the null hypothesis. d. The sample mean should be very different from 80 and should lead you to reject the null hypothesis Indicate whether the statement is true or false 4. Multiplying every score in a sample by 3 will not change the value of the standard deviation. a. True b. False 5. A probability score is always an number between 0 and 1 a. True b. False Indicate the answer choice that best completes the statement or answers the question.

Explanation / Answer

1) P(Z<-1.00)=0.1587 ( option C is correct)

2)option A is corect

3) option C is correct

4)false option B

5)

true ; option A

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