A university wants to implement a support course model to help college algebra students do better in their classes. The university will try the model on a class of 35 students to determine how well it works. The average grade of the students with the support course is 71% with a standard deviation of 20%. The university compares these students to the the other 180 college algebra students with no support course. The average grade o the college algebra students with no support course is 69% with a standaro deviation of 18%. College algebra grades are normally distributed. At the 5% significance level determine if the average grade with support is greater than the courses that do not have a support course. Use the support course class as population 1. Give the hypotheses. O Null: There is no difference in the average grade with those that have a support course and those that do not. Alternative: The average grade of students with a support class will be higher. O Null: There is no difference in the average grade with those that have a support course and those that do not. Alternative: The average grade of students with a support class will be lower. O Null: There is no difference in the average grade with those that have a support
A university wants to implement a support course model to help college algebra students do better in their classes. The university will try the model on a class of 35 students to determine how well it works. The average grade of the students with the support course is 71% with a standard deviation of 20%. The university compares these students to the the other 180 college algebra students with no support course. The average grade o the college algebra students with no support course is 69% with a standaro deviation of 18%. College algebra grades are normally distributed. At the 5% significance level determine if the average grade with support is greater than the courses that do not have a support course. Use the support course class as population 1. Give the hypotheses. O Null: There is no difference in the average grade with those that have a support course and those that do not. Alternative: The average grade of students with a support class will be higher. O Null: There is no difference in the average grade with those that have a support course and those that do not. Alternative: The average grade of students with a support class will be lower. O Null: There is no difference in the average grade with those that have a support
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 11CYU
Related questions
Question
question 2
Give the rejection region.
Group of answer choices
t greater than 1.68
z greater than 1.68
z greater than 0.55
t greater than 0.55
question 3
Give the test statistic.
Group of answer choices
t = 0.55
z = 0.55
z = 1.68
t = 1.68
question 4
Give the conclusion.
Group of answer choices
Reject the null since the test statistic is in the rejection region.
Fail to reject the null since the test statistic is not in the rejection region.
Transcribed Image Text:A university wants to implement a support course model to help college
algebra students do better in their classes. The university will try the model
on a class of 35 students to determine how well it works. The average
grade of the students with the support course is 71% with a standard
deviation of 20%. The university compares these students to the the other
180 college algebra students with no support course. The average grade of
the college algebra students with no support course is 69% with a standard
deviation of 18%. College algebra grades are normally distributed. At the
5% significance level determine if the average grade with support is greater
than the courses that do not have a support course. Use the support
course class as population 1.
Give the hypotheses.
O Null: There is no difference in the average grade with those that have a support
course and those that do not.
Alternative: The average grade of students with a support class will be higher.
O Null: There is no difference in the average grade with those that have a support
course and those that do not.
Alternative: The average grade of students with a support class will be lower.
O Null: There is no difference in the average grade with those that have a support
course and those that do not.
Alternative: The average grade of students with a support course is not equal to
those without a support course.
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