MATH 221 Week 5 Quiz: Statistics for Decision-Making (100% CORRECT ANSWERS)
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Course
MATH 221
Institution
DeVry University, Chicago
MATH 221 Week 5 Quiz: Statistics for Decision-Making Question 1 2 / 2 pts (CO 4) Consider the following table: Age Group Frequency - 1 70 and over 527 If you created the probability distribution for these data, what would be the probability of 40-49? 0.237 0.425 0.189 Correct! 0.165 Question 2 2 /...
math 221 week 5 quiz statistics for decision making 100 correct answers
co 4 consider the following table of hours worked by part time employees these employees must work in 5 hour blocks
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DeVry University, Chicago
MATH 221
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MATH 221 Week 5 Quiz: Statistics for Decision-Making
Question 1
pts
(CO 4) Consider the following table:
Age Group Frequency
18-29 983
30-39 784
40-49 686
50-59 632
60-69 541
70 and over 527
If you created the probability distribution for these data, what would be the probability of 40-49?
0.237
0.425
0.189
Correct!
0.165
Question 2
pts
(CO 4) Consider the following table of hours worked by part-time employees. These employees must
work in 5 hour blocks.
Weekly hours worked Probability
5 0.06
15 0.61
20 0.18
25 0.15
, Find the mean of this variable.
18.95
12.20
17.50
Correct!
16.80
Question 3
pts
(CO 4) Consider the following table:
Defects in batchProbability
0 0.21
1 0.19
2 0.30
3 0.15
4 0.11
5 0.04
Find the variance of this variable.
1.49
1.40
Correct!
1.97
1.88
Question 4
pts
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