Statistics for Management and Economics (Book Only)
11th Edition
ISBN: 9781337296946
Author: Gerald Keller
Publisher: Cengage Learning
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Question
Chapter 21.1, Problem 1E
To determine
Chance variation.
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31
You see a TV commercial that states that “seven out of ten physicians surveyed prefer the ingredients in pain reliever X to plain aspirin.” You write the company because you are curious about the survey, and to your amazement, you find that the survey was of exactly ten physicians. Suppose the population of physicians was indifferent as to the advertised product and plain aspirin, that is, 50% preferred aspirin and 50% preferred the advertised product. What is the probability that a survey of ten randomly selected physicians would find seven or more who preferred the advertised product?
a
0.0619
b
0.1031
c
0.1719
d
0.2265
A few minutes ago, Joe Doe learned that his company was having a bad year and thus merit salary increases will be smaller than expected. His division’s budget has been set and so he knows that he will receive a salary increase of $400 over his present salary. Joe Doe has also been offered a transfer to another division in the company. He is unsure of the salary situation in the other division. However, his best information leads him to conclude that if he took the new job, there is a 60% chance that he would receive a salary increase of $600 over his present salary, and a 40% chance that he would receive only a $150 increase over his present salary. To summarize, Joe Doe can either stick with his current job and get a salary increase of $400, or take a transfer to a new job and get a salary increase of either $600 with a 60% probability, or $150 with a 40% probability.
Amount ($X)
Value (v($X))
$0
-5
$150
-2.5
$200
-2
$300
0
$350
0.5
$400
1
$600
1.85…
Two cards are drawn from a standard deck without replacement. What is the probability that the first card is a diamond and the second card is red? (Round your answer to three decimal places.)
Chapter 21 Solutions
Statistics for Management and Economics (Book Only)
Ch. 21.1 - Prob. 1ECh. 21.1 - Prob. 2ECh. 21.1 - Prob. 3ECh. 21.1 - Prob. 4ECh. 21.2 - Prob. 5ECh. 21.2 - Prob. 6ECh. 21.2 - Prob. 7ECh. 21.2 - Prob. 8ECh. 21.2 - Prob. 9ECh. 21.2 - Prob. 10E
Ch. 21.2 - Prob. 11ECh. 21.2 - Prob. 12ECh. 21.2 - Prob. 13ECh. 21.2 - Prob. 14ECh. 21.2 - Prob. 15ECh. 21.2 - Prob. 16ECh. 21.2 - Prob. 17ECh. 21.2 - Prob. 18ECh. 21.2 - Prob. 19ECh. 21.2 - Prob. 20ECh. 21.2 - Prob. 21ECh. 21.2 - Prob. 22ECh. 21.3 - Prob. 23ECh. 21.3 - Prob. 24ECh. 21.3 - Prob. 25ECh. 21.3 - Prob. 26ECh. 21.3 - Prob. 27ECh. 21.3 - Prob. 28ECh. 21.3 - Prob. 29ECh. 21.3 - Prob. 30ECh. 21.3 - Prob. 31ECh. 21.3 - Prob. 32ECh. 21.3 - Prob. 33ECh. 21.3 - Prob. 34ECh. 21.3 - Prob. 35ECh. 21.3 - Prob. 36ECh. 21.3 - Prob. 37ECh. 21.3 - Prob. 38ECh. 21.3 - Prob. 39ECh. 21.3 - Prob. 40ECh. 21.3 - Prob. 41ECh. 21.3 - Prob. 42ECh. 21.4 - Prob. 43ECh. 21.4 - Prob. 44ECh. 21.4 - Prob. 45ECh. 21.4 - Prob. 46ECh. 21.4 - Prob. 47ECh. 21.4 - Prob. 48ECh. 21.4 - Prob. 49ECh. 21.4 - Prob. 50E
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