The following joint frequency distribution table shows responses from a sample of 210 unionized employees on how their union president handled a recent labour action. Employees were categorized by age group and by their level of approval. Age GroupApproveDisapproveIndifferentTotalunder 251231307325 to 402620854over 4038212483Total767262210 Report answers accurate to at least 4 decimal places.What is the probability that a randomly selected employee:a) did not disapprove? b) was in the 25 to 40 age group and approved? c) was not in the 25 to 40 age group and approved? d) was in the under 25 age group or disapproved? e) was not in the under 25 age group or disapproved? f) was not under 25 and did not disapprove? Given that an employee was in the 25 to 40 age group, what is the probability that the employeea) approved? b) did not disapprove? What is the probability of selecting an employee that was in the under 25 age group from a group of employees thata) approved? b) did not disapprove? The following joint frequency distribution table shows responses from a sample of 210 unionized employeeson how their union president handled a recent labour action. Employees were categorized by age group andby their level of approval.Age Groupunder 2525 to 40over 40TotalApprove12263876Disapprove31202172Indifferent3082462a) approved?b) did not disapprove?Total735483210Report answers accurate to at least 4 decimal places.1. What is the probability that a randomly selected employee:a) did not disapprove?b) was in the 25 to 40 age group and approved?c) was not in the 25 to 40 age group and approved?d) was in the under 25 age group or disapproved?e) was not in the under 25 age group or disapproved?f) was not under 25 and did not disapprove?2. Given that an employee was in the 25 to 40 age group, what is the probability that the employeea) approved?b) did not disapprove?3. What is the probability of selecting an employee that was in the under 25 age group from a group ofemployees that

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Answered: The following joint frequency…

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 3E

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Question

The following joint frequency distribution table shows responses from a sample of 210 unionized employees on how their union president handled a recent labour action. Employees were categorized by age group and by their level of approval.

Age Group	Approve	Disapprove	Indifferent	Total
under 25	12	31	30	73
25 to 40	26	20	8	54
over 40	38	21	24	83
Total	76	72	62	210

Report answers accurate to at least 4 decimal places.

What is the probability that a randomly selected employee:

a) did not disapprove?
b) was in the 25 to 40 age group and approved?
c) was not in the 25 to 40 age group and approved?
d) was in the under 25 age group or disapproved?
e) was not in the under 25 age group or disapproved?
f) was not under 25 and did not disapprove?

Given that an employee was in the 25 to 40 age group, what is the probability that the employee

a) approved?
b) did not disapprove?

What is the probability of selecting an employee that was in the under 25 age group from a group of employees that

a) approved?
b) did not disapprove?

The following joint frequency distribution table shows responses from a sample of 210 unionized employees
on how their union president handled a recent labour action. Employees were categorized by age group and
by their level of approval.
Age Group
under 25
25 to 40
over 40
Total
Approve
12
26
38
76
Disapprove
31
20
21
72
Indifferent
30
8
24
62
a) approved?
b) did not disapprove?
Total
73
54
83
210
Report answers accurate to at least 4 decimal places.
1. What is the probability that a randomly selected employee:
a) did not disapprove?
b) was in the 25 to 40 age group and approved?
c) was not in the 25 to 40 age group and approved?
d) was in the under 25 age group or disapproved?
e) was not in the under 25 age group or disapproved?
f) was not under 25 and did not disapprove?
2. Given that an employee was in the 25 to 40 age group, what is the probability that the employee
a) approved?
b) did not disapprove?
3. What is the probability of selecting an employee that was in the under 25 age group from a group of
employees that

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