Which of the following random variable would you expect to be discrete?A. The weights of mechanically produced itemsB. The number of children at a Christmas partyC. The times, in seconds, for a 100m sprintD. The lifetimes of resistors2. X is a random variable, with mean u and standard deviation D.(X – µ)/o. What are the mean and standard deviation, respectively of z?A. 0, 1The standardized form of X is z =В. 1, 0С. 2, 03. A distribution of data has a mean of 15 and a standard deviation of 2. How many standard deviations awayD. 2, 1from the mean is a value of 13?A. One standard deviation above the meanB. Two standard deviation above the meanC. One standard deviation beloww the meanD. Two standard deviation below the mean4. The average waist size for teenage males is 29 inches with the standard deviation of 2 inches. What is the z-score of a teenage male with a 33 inches' waist size?A. -2В. -1C. 1D. 25. If 99.7% of the teenage males in #4 will be considered, what are the limits of their waist size?A. 23 - 33 inВ. 23 — 35 inC. 24 - 34 inD. 25 – 35 in6. What is the area that corresponds to z-value, = 1.21?A. 0.34375B. 0.36650C. 0.38686D. 0.403207. What is the area that corresponds to z-value, =- 0.91?A. 0.31859B. 0.34375C. 0.36650D. 0.403208. If the area under the normal distribution is 0.44179 what z-value correspond to it?В. -1.47A. -1.57С. 1.56D. 1.589. What is the area under the standard normal curve to the right of =- 2.67?Α. 0.0038B. 0.0869C. 0.1234D. 0.996210.For the standard normal distribution, what is the area between =-0.94 and = 0.94?D. 0.8264B. 0.3264C. 0.6528A. 0.173611.What value of z has an area of 0.20 to the left of z?В. -0.84C. 0.84D. 2.05A. -2.0512.The distribution of heights of SHS male students is approximately normal with mean 65 inches anddeviation 2 inches. What percentage of male students are taller than 69 inches?C. 5%D. 16%А. 1%В. 2.3%13. The shelf life of a particular dairy products is normally distributed with a mean of 12 days and a sdeviation of 3 days. About what percent of the products will last between 12 and 15 days?A. 2.5%C. 34%D. 68%В. 16%

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ich of the following random variable would you expect to be discrete? A. The weights of mechanically produced items B. The number of children at a Christmas party C. The times, in seconds, for a 100m sprint D. The lifetimes of resistors

ich of the following random variable would you expect to be discrete? A. The weights of mechanically produced items B. The number of children at a Christmas party C. The times, in seconds, for a 100m sprint D. The lifetimes of resistors

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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Concept explainers

Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.

Topic Video

Question

Which of the following random variable would you expect to be discrete?
A. The weights of mechanically produced items
B. The number of children at a Christmas party
C. The times, in seconds, for a 100m sprint
D. The lifetimes of resistors
2. X is a random variable, with mean u and standard deviation D.
(X – µ)/o. What are the mean and standard deviation, respectively of z?
A. 0, 1
The standardized form of X is z =
В. 1, 0
С. 2, 0
3. A distribution of data has a mean of 15 and a standard deviation of 2. How many standard deviations away
D. 2, 1
from the mean is a value of 13?
A. One standard deviation above the mean
B. Two standard deviation above the mean
C. One standard deviation beloww the mean
D. Two standard deviation below the mean
4. The average waist size for teenage males is 29 inches with the standard deviation of 2 inches. What is the z-
score of a teenage male with a 33 inches' waist size?
A. -2
В. -1
C. 1
D. 2
5. If 99.7% of the teenage males in #4 will be considered, what are the limits of their waist size?
A. 23 - 33 in
В. 23 — 35 in
C. 24 - 34 in
D. 25 – 35 in
6. What is the area that corresponds to z-value, = 1.21?
A. 0.34375
B. 0.36650
C. 0.38686
D. 0.40320
7. What is the area that corresponds to z-value, =- 0.91?
A. 0.31859
B. 0.34375
C. 0.36650
D. 0.40320
8. If the area under the normal distribution is 0.44179 what z-value correspond to it?
В. -1.47
A. -1.57
С. 1.56
D. 1.58
9. What is the area under the standard normal curve to the right of =- 2.67?
Α. 0.0038
B. 0.0869
C. 0.1234
D. 0.9962
10.For the standard normal distribution, what is the area between =-0.94 and = 0.94?
D. 0.8264
B. 0.3264
C. 0.6528
A. 0.1736
11.What value of z has an area of 0.20 to the left of z?
В. -0.84
C. 0.84
D. 2.05
A. -2.05
12.The distribution of heights of SHS male students is approximately normal with mean 65 inches and
deviation 2 inches. What percentage of male students are taller than 69 inches?
C. 5%
D. 16%
А. 1%
В. 2.3%
13. The shelf life of a particular dairy products is normally distributed with a mean of 12 days and a s
deviation of 3 days. About what percent of the products will last between 12 and 15 days?
A. 2.5%
C. 34%
D. 68%
В. 16%

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