15. A statistics teacher announces to the class at the beginning of the semester that there is a 40% chance a randomly chosen student will finish the semester with an A in the class and there is a 60% a randomly chosen student will get an A on a test during the semester. Is the probability that a randomly chosen student receives an A in the class and an A on a test during the semester equal to 0.24? No, because the chance of getting an A on a test and getting an A in the class are not mutually exclusive. Yes, because the chance of getting an A on a test and getting an A in the class are mutually exclusive. c. No, because the chance of getting an A on a test and getting an A in the class are not independent. d. Yes, because the chance of getting an A on a test and getting an A in the class are independent.

15. A statistics teacher announces to the class at the beginning of the semester that there is a 40% chance a randomly chosen student will finish the semester with an A in the class and there is a 60% a randomly chosen student will get an A on a test during the semester. Is the probability that a randomly chosen student receives an A in the class and an A on a test during the semester equal to 0.24? No, because the chance of getting an A on a test and getting an A in the class are not mutually exclusive. Yes, because the chance of getting an A on a test and getting an A in the class are mutually exclusive. c. No, because the chance of getting an A on a test and getting an A in the class are not independent. d. Yes, because the chance of getting an A on a test and getting an A in the class are independent.

Name: #15 13. A family plans to have three children. Assume that the probabi
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Description: #15 13. A family plans to have three children. Assume that the probability of have a boy or a girl is equally likely.Find a probability model for this chance process.Number of 3s 0 1 2 3ProbabilityNumber of 3s 0 1 2 3ProbabilityNumber of 3s 0 1 2 3Pr

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

Unitary Method

The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.

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Profit and Loss

The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.

Units and Measurements

Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.

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Question

#15

13. A family plans to have three children. Assume that the probability of have a boy or a girl is equally likely.
Find a probability model for this chance process.
Number of 3s 0 1 2 3
Probability
Number of 3s 0 1 2 3
Probability
Number of 3s 0 1 2 3
Probability
Number of 3s 0 1 2 3
Probability
а.
1/16 7/16 7/16 1/16
b.
1/8 3/8 3/8 1/8
с.
1/4 1/4 1/4 1/4
d.
1/8 2/8 2/8 1/8
14. While driving to work, Arceli passes through 3 stop lights. The probability distribution of the number of
lights she stops at is shown below. What is the probability that Arceli has to stop at fewer than two lights for
her ride to work?
L
P(L)
0.1
0.3
0.2
0.4
a. 0.6
0.4
d. 0.3
15. A statistics teacher announces to the class at the beginning of the semester that there is a 40% chance a
с.
b.
0.2
randomly chosen student will finish the semester with an A in the class and there is a 60% a randomly chosen
student will get an A on a test during the semester. Is the probability that a randomly chosen student receives
an A in the class and an A on a test during the semester equal to 0.24?
No, because the chance of getting an A on a test and getting an A in the class are not
mutually exclusive.
b. Yes, because the chance of getting an A on a test and getting an A in the class are
mutually exclusive.
No, because the chance of getting an A on a test and getting an A in the class are not
independent.
d. Yes, because the chance of getting an A on a test and getting an A in the class are
independent.
a.
с.
16. Of all the lightbulbs manufactured at a certain factory, 95% of the lightbulbs work and 5% are defective. If
six lightbulbs are selected at random from all of the lightbulbs, what is the probability that all of them work?
c. 0.735
d. 0.30
а.
0.70
b. 0.265
17. Ten singers have signed up for a signing competition. The order in which they will compete is selected by
random draw. Five of the signers will compete before an intermission and five will compete after the
intermission. How many different ways are there for the five singers to be selected to sing before
intermission?
40
b. 100,000
a.
с.
252
d. 30,240
18. Four fair coins are flipped and the number of heads that land face up are counted. The probability
distribution of the number of heads face up is shown below. What is the probability that more than one coin
lands heads face up?
T
1
2
4
P(T)
0.0625
0.25
0.375
0.25
0.0625
0.375
0.3125
d. 0.6875
а.
с.
b.
0.25

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