In a normal distribution, the majority of cases fall: Question 1 options: between –1 and +1 standard deviations from the mean. between +1 and +2 standard deviations from the mean. below –3 standard deviations from the mean. below +3 standard deviations from the mean. Question 2 A class consists of 10 male and 30 female students. If one student is randomly selected from the class, what is the probability of selecting a male student? Question 2 options: 10/30 10/40 1/10 1/40 Question 3A z score _____ the mean will always be _____. Question 3 options: below; positive above; negative equal to; negative equal to; zero Question 4 Which of the following is a requirement for a random sample? Question 4 options: Every individual has an equal chance of being selected. The probabilities cannot change during a series of selections. There must be sampling with replacement. All of the other 3 choices are correct. Question 5 The percentile is the: Question 5 options: same thing as a percentage. percentage of scores falling at or below a particular raw score. percentage of scores falling at or above a particular raw score. percentage of scores falling between a particular raw score and the mean. Question 6What percentage of scores fall between the mean and a z score of 1.17? Question 6 options: 6.75 percent 13.59 percent 34.13 percent 37.90 percent Question 7In a normal distribution, what percentage of scores falls below a z score of –2.33? Question 7 options: 0.99 percent 2.12 percent 9.10 percent 40.52 percent Question 8What percentage of scores falls between the mean and 1 standard deviation above the mean? Question 8 options: 0.13 percent 2.14 percent 13.59 percent 34.13 percent Question 9 What is the difference between a normal distribution and other symmetrical distributions? Question 9 options: The mean, median, and mode are all equal. The frequencies of scores decrease as they get farther from the midpoint. A specific percentage of scores must fall within a given area of the curve. All symmetrical distributions are normally distributed. Question 10A specific bell-shaped curve that is defined by the percentage of cases that fall in specific areas under the curve is known as the: Question 10 options: normal distribution. symmetrical distribution. positively skewed distribution. bimodal distribution.

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Answered: In a normal distribution, the majority…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question 2

A class consists of 10 male and 30 female students. If one student is randomly selected from the class, what is the probability of selecting a male student?

Question 2 options:

	10/30
	10/40
	1/10
	1/40

Question 3

A z score _____ the mean will always be _____.

Question 3 options:

	below; positive
	above; negative
	equal to; negative
	equal to; zero

Question 4

Which of the following is a requirement for a random sample?

Question 4 options:

	Every individual has an equal chance of being selected.
	The probabilities cannot change during a series of selections.
	There must be sampling with replacement.
	All of the other 3 choices are correct.

Question 5

The percentile is the:

Question 5 options:

	same thing as a percentage.
	percentage of scores falling at or below a particular raw score.
	percentage of scores falling at or above a particular raw score.
	percentage of scores falling between a particular raw score and the mean.

Question 6

What percentage of scores fall between the mean and a z score of 1.17?

Question 6 options:

	6.75 percent
	13.59 percent
	34.13 percent
	37.90 percent

Question 7

In a normal distribution, what percentage of scores falls below a z score of –2.33?

Question 7 options:

	0.99 percent
	2.12 percent
	9.10 percent
	40.52 percent

Question 8

What percentage of scores falls between the mean and 1 standard deviation above the mean?

Question 8 options:

	0.13 percent
	2.14 percent
	13.59 percent
	34.13 percent

Question 9

What is the difference between a normal distribution and other symmetrical distributions?

Question 9 options:

	The mean, median, and mode are all equal.
	The frequencies of scores decrease as they get farther from the midpoint.
	A specific percentage of scores must fall within a given area of the curve.
	All symmetrical distributions are normally distributed.

Question 10

A specific bell-shaped curve that is defined by the percentage of cases that fall in specific areas under the curve is known as the:

Question 10 options:

	normal distribution.
	symmetrical distribution.
	positively skewed distribution.
	bimodal distribution.

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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	between –1 and +1 standard deviations from the mean.
	between +1 and +2 standard deviations from the mean.
	below –3 standard deviations from the mean.
	below +3 standard deviations from the mean.