a) Determine the probability that a randomly selected call was during the week. The probability is----- (Round to three decimal places as needed.) b. Determine the probability that a randomly selected call was less than 20 minutes. The probability is----- (Round to three decimal places as needed.) c. Determine the probability that a randomly selected call was 10 to less than 20 minutes. The probability is-----
a) Determine the probability that a randomly selected call was during the week. The probability is----- (Round to three decimal places as needed.) b. Determine the probability that a randomly selected call was less than 20 minutes. The probability is----- (Round to three decimal places as needed.) c. Determine the probability that a randomly selected call was 10 to less than 20 minutes. The probability is-----
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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a) Determine the probability that a randomly selected call was during the week.
The probability is-----
(Round to three decimal places as needed.)
b. Determine the probability that a randomly selected call was less than 20 minutes.
The probability is-----
(Round to three decimal places as needed.)
c. Determine the probability that a randomly selected call was 10 to less than 20 minutes.
The probability is-----
(Round to three decimal places as needed.)
|
A call center for customer support records the time each customer requires for service and whether the call occurred during the week (Monday through Friday) or during the weekend (Saturday and Sunday). The results are shown in the accompanying table. Complete parts a through h.
|
Time (minutes)
|
Week
|
Weekend
|
|
|---|---|---|---|---|
|
Less than 5
|
15
|
4
|
|
|
|
5 to less than 10
|
27
|
3
|
|
|
|
10 to less than 15
|
12
|
8
|
|
|
|
15 to less than 20
|
23
|
5
|
|
|
|
More than 20
|
10
|
14
|
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