Calculus and Its Applications (11th Edition)
11th Edition
ISBN: 9780321979391
Author: Marvin L. Bittinger, David J. Ellenbogen, Scott J. Surgent
Publisher: PEARSON
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Textbook Question
Chapter CR, Problem 73E
Business: wait times. The wait time t in minutes, between customers at Teri’s Book Nook can be modeled by the probability density function
a. What is the probability that the wait time is at most 2 min?
b. What is the probability that the wait time is greater than 5 min?
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Do you dislike waiting in line? A supermarket chain has used computer simulation and information technology to reduce the average waiting time for customers at 2,300 stores. Using a new system, which allows the supermarket to better predict when shoppers will be checking out, the company was able to decrease average customer waiting time to just 23 seconds.
(a)
Assume that supermarket waiting times are exponentially distributed. Show the probability density function of waiting time at the supermarket.
f(x) =
,
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,
elsewhere
(b)
What is the probability that a customer will have to wait between 30 and 45 seconds? (Round your answer to four decimal places.)
(c)
What is the probability that a customer will have to wait more than 2 minutes? (Round your answer to four decimal places.)
Do you dislike waiting in line? A supermarket chain has used computer simulation and information technology to reduce the average waiting time for customers at 2,300 stores. Using a new system, which allows the supermarket to better predict when shoppers will be checking out, the company was able to decrease average customer waiting time to just 28 seconds.
(a)Assume that supermarket waiting times are exponentially distributed. Show the probability density function of waiting time at the supermarket.
f(x) =
x ≥ 0
elsewhere
(b) What is the probability that a customer will have to wait between 30 and 45 seconds? (Round your answer to four decimal places.)
(c) What is the probability that a customer will have to wait more than 2 minutes? (Round your answer to four decimal places.)
In a study of intelligence, the time (in seconds) for a laboratory animal to reach a reward in a maze was found to have a probability density function
f(t) =
8
t 2
, t ≥ 8
where 8 seconds is the minimum time to traverse the maze.
(a)
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(b)
Find the probability that an animal chosen at random takes more than 28 seconds given that it took less than 56 seconds.
Chapter CR Solutions
Calculus and Its Applications (11th Edition)
Ch. CR - Write an equation of the line with slope 4 and...Ch. CR - Prob. 2ECh. CR - For f(x)=x25, find f(x+h). x2+2xh+h25Ch. CR - 4. a. Graph:
b. Find.
c. Find.
d. Is f...Ch. CR - Prob. 5ECh. CR - Find each limit, if it exists. If a limit does not...Ch. CR - Find each limit, if it exists. If a limit does not...Ch. CR - Find each limit, if it exists. If a limit does not...Ch. CR - Find each limit, if it exists. If a limit does not...Ch. CR - Find each limit, if it exists. If a limit does not...
Ch. CR - Find each limit, if it exists. If a limit does not...Ch. CR - For Exercises 12-14, refer to the following graph...Ch. CR - For Exercises 12-14, refer to the following graph...Ch. CR - For Exercises 12-14, refer to the following graph...Ch. CR - Differentiate. y=9x+3Ch. CR - Differentiate. y=x27x+3Ch. CR - Differentiate. y=x1/4Ch. CR - Differentiate. f(x)=x6Ch. CR - Prob. 19ECh. CR - Differentiate.
22.
Ch. CR - Prob. 21ECh. CR - Differentiate. y=elnxCh. CR - Prob. 23ECh. CR - Differentiate.
24.
Ch. CR - Differentiate.
25.
Ch. CR - 26. For find.
Ch. CR - Business: average cost. Doubletake Clothing finds...Ch. CR -
28. Differentiate implicitly to find if .
Ch. CR - Find an equation of the tangent line to the graph...Ch. CR - 30. Find the x-value(s) at which the tangent line...Ch. CR - Sketch the graph of each function. List the label...Ch. CR - Prob. 32ECh. CR - Sketch the graph of each function. List the label...Ch. CR - Prob. 34ECh. CR - Find the absolute maximum and minimum values, if...Ch. CR - Prob. 36ECh. CR - Prob. 37ECh. CR - Prob. 38ECh. CR - 39. Business: minimizing inventory costs. An...Ch. CR - Prob. 40ECh. CR - Business: exponential growth. Friedas Frozen...Ch. CR - Prob. 42ECh. CR - 43. Business: approximating cost average. A square...Ch. CR - Prob. 44ECh. CR - Prob. 46ECh. CR - Prob. 47ECh. CR - Evaluate.
48. (Use Table 1 on pp. 431-432)
Ch. CR - Prob. 49ECh. CR - Evaluate. (x+3)lnxdxCh. CR - Prob. 51ECh. CR - Prob. 52ECh. CR - 53. Find the area under the graph of over the...Ch. CR - Business: present value. Find the present value of...Ch. CR - Prob. 55ECh. CR - Evaluate.
56. Business: contract buyout. An...Ch. CR - Prob. 57ECh. CR - 58. Economic: supply and demand. Demand and supply...Ch. CR - 59. Find the volume of the solid of revolution...Ch. CR - 60. Find the volume of the solid of revolution...Ch. CR - Consider the data in the following table. Age of...Ch. CR - Prob. 62ECh. CR - Given find each of the following.
63.
Ch. CR - Prob. 64ECh. CR - 65. Maximize subject to the constraint.
Ch. CR - 66. Evaluate
.
Ch. CR - Prob. 67ECh. CR - Solve the differential equation dy/dx=xy.Ch. CR - Solve the differential equation y+4xy=3x, where...Ch. CR - Prob. 70ECh. CR - Prob. 71ECh. CR - Business: distribution of weights. The weight, in...Ch. CR - Business: wait times. The wait time t in minutes,...Ch. CR - Prob. 74ECh. CR - 75. Business: distribution of salaries. The...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, calculus and related others by exploring similar questions and additional content below.Similar questions
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