The telephone calls to a U.S. Congresswoman's local office between 9:00 A.M. and 12:00 noon are received approximately at the rate of 15 per hour. The probabilty that there is a time period of 4 minutes or more between calls is given by 00 15t dt 15e J1/15

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section: Chapter Questions
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The telephone calls to a U.S. Congresswoman's local office between 9:00 A.M. and 12:00 noon are received
approximately at the rate of 15 per hour. The probabilty that there is a time period of 4 minutes or more between
calls is given by
00
– 15t
dt
15e
/ 15
4
1
comes from 4 minutes
15
Determine this probability rounded to 2 decimal places. (The
hours.)
15
60
00
15t
15e
dt
1/15
TIP
Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172
Enter DNE for Does Not Exist, oo for Infinity
Transcribed Image Text:The telephone calls to a U.S. Congresswoman's local office between 9:00 A.M. and 12:00 noon are received approximately at the rate of 15 per hour. The probabilty that there is a time period of 4 minutes or more between calls is given by 00 – 15t dt 15e / 15 4 1 comes from 4 minutes 15 Determine this probability rounded to 2 decimal places. (The hours.) 15 60 00 15t 15e dt 1/15 TIP Enter your answer as an integer or decimal number. Examples: 3, -4, 5.5172 Enter DNE for Does Not Exist, oo for Infinity
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