A market research firm conducts telephone surveys with a 40% historical response rate. What is the probability that in a new sample of 400 telephone numbers, at least 150 individuals will cooperate a respond to the questions? In other words, what is the probability that the sample proportion will be at least 150/400 = .375 (to 4 decimals)? Use z-table.
A market research firm conducts telephone surveys with a 40% historical response rate. What is the probability that in a new sample of 400 telephone numbers, at least 150 individuals will cooperate a respond to the questions? In other words, what is the probability that the sample proportion will be at least 150/400 = .375 (to 4 decimals)? Use z-table.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
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.5040
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.5199
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.6141
.3
6179
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.6664
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.6406
.6443
6480
.4
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.5
6915
.6950
6985
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.7054
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7291
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7580
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.7764
.8051
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.8
.7881
.8106
.7910
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.9
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.8289
8315
.8340
.8365
.8389
.8531
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1.0
.8413
.8438
.8461
.8485
.8508
.8554
.8577
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1.1
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.8686
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1.3
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.9162
1.4
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9319
.9382
9332
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1.5
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1.6
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1.7
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1.9
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2.9
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Transcribed Image Text:.00
.01
.02
.03
.04
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5753
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5000
.5040
.5120
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.5199
.5239
.5279
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5636
.5675
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.2
.5832
.5871
5910
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.6026
.6064
.6103
.6141
.3
6179
.6217
.6255
.6368
.6736
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.6664
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.6406
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6480
.4
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.5
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.7
7580
.7611
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.8051
.7642
.7673
.7734
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.7794
.8078
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.8
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.7967
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.9
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.8365
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1.0
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1.1
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1.2
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1.3
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1.4
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.9251
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.9279
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1.5
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1.6
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1.7
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1.9
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2.2
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2.3
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2.4
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9932
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2.5
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2.7
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2.8
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.9975
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9977
9977
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9979
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2.9
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9982
.9983
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9984
9985
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3.0
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9987
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.9988
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.9989
9989
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
Transcribed Image Text:A market research firm conducts telephone surveys with a 40% historical response rate. What is the probability that in a new sample of 400 telephone numbers, at least 150 individuals will cooperate and
respond to the questions? In other words, what is the probability that the sample proportion will be at least 150/400 = .375 (to 4 decimals)? Use z-table.
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