Mathematics, 16.06.2020 18:57 arianaguerin
A test preparation claims that more than 50% of the students who take their test prep course improve their scores by at least 10 points. Instead of advertising the percentage of customers who improve by at least 10 points, a manager suggests testing whether the mean score improves at all. For each customer they record the difference in score before and after taking the course.
Required:
a. State the null and alternative hypotheses.
b. The P-value from the test is 0.65. Does this provide any evidence that their course works?
c. From part b, what can you tell, if anything, about the mean difference in the sample scores?
Answers: 2
Mathematics, 21.06.2019 19:30
Solve the following inequalities and show the solution on a number line. 2x+3< 3(4x+5)
Answers: 1
Mathematics, 21.06.2019 21:30
Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3
Answers: 2
Mathematics, 22.06.2019 00:30
Jennifer taking a quiz and has answered 13 questions so far. if there are 25 questions on jennifer test, how many questions does she have left to answer
Answers: 1
A test preparation claims that more than 50% of the students who take their test prep course improve...
Mathematics, 23.11.2021 05:10
Biology, 23.11.2021 05:10
Mathematics, 23.11.2021 05:10
English, 23.11.2021 05:10
Social Studies, 23.11.2021 05:10
Mathematics, 23.11.2021 05:10
History, 23.11.2021 05:10
Mathematics, 23.11.2021 05:10
Mathematics, 23.11.2021 05:10