Homework Help is Here – Start Your Trial Now!
Math
Probability
Foreign freshmen are required to take an English placement exam. Over the past several years, 20% of the new students have failed the test and have been placed in remedial classes. In a sample of n = 100 students from this year’s class, only 12 failed the test.

Foreign freshmen are required to take an English placement exam. Over the past several years, 20% of the new students have failed the test and have been placed in remedial classes. In a sample of n = 100 students from this year’s class, only 12 failed the test.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 30PPS
See similar textbooks
icon
Related questions
Question

Foreign freshmen are required to take an English placement exam. Over the past several years, 20% of the new students have failed the test and have been placed in remedial classes. In a sample of n = 100 students from this year’s class, only 12 failed the test.

What is the conclusion of this test, if our significance level a = 0.05? (a) We reject the null and conclude that we do not have enough evidence to conclude that the sample proportion is different from the proportion who failed in previous years (b) We fail to reject the null and conclude that we do not have enough evidence to conclude that the sample proportion is different from the proportion who failed in previous years (c) We reject the null and conclude that the sample proportion is different from the proportion who failed in previous years (d) We fail to reject the null and conclude that the sample proportion is different from the proportion who failed in previous years (e) None of the above
Transcribed Image Text:What is the conclusion of this test, if our significance level a = 0.05? (a) We reject the null and conclude that we do not have enough evidence to conclude that the sample proportion is different from the proportion who failed in previous years (b) We fail to reject the null and conclude that we do not have enough evidence to conclude that the sample proportion is different from the proportion who failed in previous years (c) We reject the null and conclude that the sample proportion is different from the proportion who failed in previous years (d) We fail to reject the null and conclude that the sample proportion is different from the proportion who failed in previous years (e) None of the above
Expert Solution
steps

Step by step

Solved in 5 steps with 5 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
College Algebra
College Algebra
Algebra
ISBN:
9781938168383
Author:
Jay Abramson
Publisher:
OpenStax
SEE MORE TEXTBOOKS