A competency test is modified so that the proportion of test-takers that pass is more than 75%. A simple random sample of test-takers is collected to determine if the proportion of passers is greater than 75%. The results of the sample are shown below. Competency test sample passed 82 Observations 100 Confidence Level 0.95 Critical value 1.64 test statistic (z) 1.72 p= Ex: 1.234: p-value 0.053 3 2 = Ex: 1.234
A competency test is modified so that the proportion of test-takers that pass is more than 75%. A simple random sample of test-takers is collected to determine if the proportion of passers is greater than 75%. The results of the sample are shown below. Competency test sample passed 82 Observations 100 Confidence Level 0.95 Critical value 1.64 test statistic (z) 1.72 p= Ex: 1.234: p-value 0.053 3 2 = Ex: 1.234
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
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Author:Carter
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Chapter10: Statistics
Section: Chapter Questions
Problem 25SGR
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Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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![A competency test is modified so that the proportion of test-takers that pass is more than 75%. A simple random
sample of test-takers is collected to determine if the proportion of passers is greater than 75%. The results of the
sample are shown below.
Competency test sample
passed
82
Observations
100
Confidence Level
0.95
Critical value
1.64
test statistic (z)
1.72
p= Ex: 1.234:
p-value
0.053
3
z = Ex: 1.234
n = Ex: 9
Number passed = Ex: 9
Sample proportion p
= Ex: 1.234](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd38182f4-038d-4a39-9ba0-300bab26f72a%2F0ced6a0e-9e28-4ddf-aafd-22cfa10ca2e8%2Fw12pf5u_processed.png&w=3840&q=75)
Transcribed Image Text:A competency test is modified so that the proportion of test-takers that pass is more than 75%. A simple random
sample of test-takers is collected to determine if the proportion of passers is greater than 75%. The results of the
sample are shown below.
Competency test sample
passed
82
Observations
100
Confidence Level
0.95
Critical value
1.64
test statistic (z)
1.72
p= Ex: 1.234:
p-value
0.053
3
z = Ex: 1.234
n = Ex: 9
Number passed = Ex: 9
Sample proportion p
= Ex: 1.234
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