violetelk252Lv1
30 Nov 2021
Problem 89
Page 561
Section: HOMEWORK
Chapter 10: HYPOTHESIS TESTING WITH TWO SAMPLE
Textbook ExpertVerified Tutor
30 Nov 2021
Given information
Suppose a statistics instructor believes that there is no significant difference between the mean class scores of statistics day students on and statistics night students on . She takes random samples from each of the populations.
The mean and standard deviation for statistics day students were and . The mean and standard deviation
for statistics night students were and . The “day” subscript refers to the statistics day students. The “night”
subscript refers to the statistics night students. A concluding statement is:
There is sufficient evidence to conclude that statistics night students' mean on Exam 2 is better than the statistics
day students' mean on Exam 2.
There is insufficient evidence to conclude that the statistics day students' mean on Exam 2 is better than the
statistics night students' mean on Exam 2.
There is insufficient evidence to conclude that there is a significant difference between the means of the statistics
day students and night students on Exam 2.
There is sufficient evidence to conclude that
Step-by-step explanation
Step 1.
The null and alternate hypotheses are as follows:
Press STAT and to get the value.
TESTS must be selected twice.
Once you've completed all of the sample entries, hit to get the following results:
The relevance of the test level is
Therefore,
The null hypothesis should not be rejected.
The answer is because there is insufficient data to determine that the means of the statistics for day and night students on differ significantly.
Unlock all Textbook Solutions
Already have an account? Log in