PSY-3301 Chapter 5 MC Quiz (Set 4)

Question 1

5 out of 5 points

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Would you rather have an income (assume a normal distribution and you are greedy) _________.

Question 2

0 out of 5 points

An economics test was given and the following sample scores were recorded:

Individual

A

B

C

D

E

F

G

H

I

J

Score

12

12

7

10

9

12

13

8

9

8

The z score for individual G is _________.

Question 3

5 out of 5 points

The normal curve is _________.

Question 4

0 out of 5 points

The standard deviation of the z distribution equals _________.

Question 5

5 out of 5 points

A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form a normal distribution with a mean of $8.52 with a standard deviation of $2.38.

What percentage of the distribution lies below $7.42.

Question 6

0 out of 5 points

In a normal distribution the z score for the mean equals _________.

Question 7

5 out of 5 points

You have just received your psychology exam grade and you did better than the mean of the exam scores. If so, the z transformed value of your grade must

Question 8

5 out of 5 points

A testing bureau reports that the mean for the population of Graduate Record Exam (GRE) scores is 500 with a standard deviation of 90. The scores are normally distributed.

The percentile rank of a score of 667 is _________.

Question 9

5 out of 5 points

The mean of the z distribution equals _________.

Question 10

5 out of 5 points

On a test with a population mean of 75 and standard deviation equal to 16, if the scores are normally distributed, what percentage of scores fall between 70 and 80?

Question 11

5 out of 5 points

In a normal distribution approximately _________ of the scores will fall within 1 standard deviation of the mean.

Question 12

5 out of 5 points

A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form a normal distribution with a mean of $8.52 with a standard deviation of $2.38.

What percentage of the distribution lies between $5 and $11?

Question 13

5 out of 5 points

A stockbroker has kept a daily record of the value of a particular stock over the years and finds that prices of the stock form a normal distribution with a mean of $8.52 with a standard deviation of $2.38.

The stock price beyond which 0.05 of the distribution falls is _________.

Question 14

5 out of 5 points

How much would your income be if its z score value was 2.58?

Question 15

5 out of 5 points

A testing bureau reports that the mean for the population of Graduate Record Exam (GRE) scores is 500 with a standard deviation of 90. The scores are normally distributed.

The proportion of scores that lie above 650 is _________.

Question 16

5 out of 5 points

In a normal curve, the inflection points occur at _________.

Question 17

5 out of 5 points

A testing bureau reports that the mean for the population of Graduate Record Exam (GRE) scores is 500 with a standard deviation of 90. The scores are normally distributed.

The proportion of scores that lie between 460 and 600 is _________.

Question 18

5 out of 5 points

The mean of the z distribution equals _________.

Question 19

5 out of 5 points

You have just taken a standardized skills test designed to help you make a career choice. Your math skills score was 63 and your writing skills score was 45. The standardized math distribution is normally distributed, with m = 50, and s = 8. The writing skills score distribution is also normally distributed, with m = 30, and s = 10. Based on this information, as between pursuing a career that requires good math skills or one requiring good writing skills, you should chose _________.

Question 20

0 out of 5 points

The proportion of scores less than z = 0.00 is _________.

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