8.14 Employees' test scores. A company sent its employees to attend two different English courses. The company is inter- ested in knowing if there is any difference between the two courses attended by its employees. When the employees returned from the courses, the company asked them to take a common test. The summary statistics of the test re- sults of each of the two English courses are recorded in the following table: Course 1 Course 2 n₁ = 50 n₂ = 50 X₁ = 75.1 X₂ = 72.1 $1 = 12.8 $2 = 14.6 a. Identify the parameter(s) that would help the company determine the difference between the two courses. b. State the appropriate null and alternative hypotheses that the company would like to test. = .327. c. After conducting the hypothesis test at the 5% sig- nificance level, the company found the p-value Interpret this result for the company.
8.14 Employees' test scores. A company sent its employees to attend two different English courses. The company is inter- ested in knowing if there is any difference between the two courses attended by its employees. When the employees returned from the courses, the company asked them to take a common test. The summary statistics of the test re- sults of each of the two English courses are recorded in the following table: Course 1 Course 2 n₁ = 50 n₂ = 50 X₁ = 75.1 X₂ = 72.1 $1 = 12.8 $2 = 14.6 a. Identify the parameter(s) that would help the company determine the difference between the two courses. b. State the appropriate null and alternative hypotheses that the company would like to test. = .327. c. After conducting the hypothesis test at the 5% sig- nificance level, the company found the p-value Interpret this result for the company.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
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