An agency offers preparation courses for a graduate school admissions test to students. As part of...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
An agency offers preparation courses for a graduate school admissions test to students. As part of an experiment to evaluate the merits of the course, 40 students were chosen and divided into 20 pairs in such a way that the members of any pair had similar academic records. Before taking the test, one member of each pair was assigned at random to take the preparation course, while the other member did not take a course. The achievement test scores are contained in the accompanying table. Assuming that the differences in scores follow a normal distribution, test at the 1% level, the null hypothesis that the two population means are equal against the alternative that the true mean is higher for students taking the preparation course. Click the icon to view the data table. Click the icon to view the critical values of the Student's t distribution. Let be the mean test scores for those who took the preparation course and let be the mean test scores for those who did not take the course. Determine the null and alternative hypotheses. Choose the correct answer below. A. Ho H1 H20 D. Ho H1 H2>0 B. Ho H1 H20 E. Ho H1-H220 H-20 C. Ho: H1 - H230 H-20 F. Ho H1 H20 H-20 The test statistic is t = (Round to three decimal places as needed.) Question Viewer An agency offers preparation courses for a graduate school admissions test to students. As part of an experiment to evaluate the merits of the course, 40 students were chosen and divided into 20 pairs in such a way that the members of any pair had similar academic records. Before taking the test, one member of each pair was assigned at random to take the preparation course, while the other member did not take a course. The achievement test scores are contained in the accompanying table. Assuming that the differences in scores follow a normal distribution, test at the 1% level, the null hypothesis that the two population means are equal against the alternative that the true mean is higher for students taking the preparation course. Click the icon to view the data table. Click the icon to view the critical values of the Student's t distribution. Let be the mean test scores for those who took the preparation course and let be the mean test scores for those who did not take the course. Determine the null and alternative hypotheses. Choose the correct answer below. A. Ho H1 H20 D. Ho H1 H2>0 B. Ho H1 H20 E. Ho H1-H220 H-20 C. Ho: H1 - H230 H-20 F. Ho H1 H20 H-20 The test statistic is t = (Round to three decimal places as needed.) Question Viewer
Expert Answer:
Posted Date:
Students also viewed these mathematics questions
-
A Howe scissors roof truss is loaded as shown. Determine the force in members DF, DG, and EG. 2AN KN 2kN F! 1AN L5 m
-
The establishment of the Free Trade Area of the Americas can be a threat as well as an opportunity for your company. Identify the countries participating in the negotiations for the FTAA. What are...
-
Amy Xias plant was designed to produce 7,000 hammers per day but is limited to making 6,000 hammers per day because of the time needed to change equipment between styles of hammers. What is the...
-
How do you draw the line between what is too detailed for the bylaws and what processes should be explained in that document? Why is this an issue?
-
In Chapter 7, you developed a use case diagram, a domain model class diagram, and detailed documentation for three use cases. In Chapter 11 you developed a three layer architectural solution and CRC...
-
Diaz Company owns a machine that cost $126,500 and has accumulated depreciation of $91,300. Prepare the entry to record the disposal of the machine on January 1 in each separate situation. The...
-
Fill in the blanks. 11. The overall chemical formula of biomass can be expressed in terms of C, H and O as has a random, amorphous structure with little strength kWh of electricity. 12. 13. One cubic...
-
Doran Technologies produces a single product. Expected manufacturing costs are as follows: Variable costs Direct materials $4.00 per unit Direct labor $1.20 per unit Manufacturing overhead $0.95 per...
-
a. Find the present values of the following cash flow streams at an 8% discount rate. Do not round intermediate calculations. Round your answers to the nearest cent 0 I 2 3 4 5 Stream A $0 $100 $450...
-
A trough has ends shaped like isosceles triangles, with width 6 m and height 7 m, and the trough is 12 m long. Water is being pumped into the trough at a rate of 4 m3/min. At what rate (in m/min)...
-
Explain the sellers bank and buyers bank when dealing with trade finance?
-
Dekemhare Sweet & Cakes Ltd (DSCL) a small family-owned business that manufactures a wide range of cakes and pastries ordered by retailers, birthday and wedding parties, local cafs, and coffee shops....
-
Omar and his three college friends, William, Sara and Robert, were considering going into the student painting business during the summer before the start of their final year at college. They had...
-
If 2 5 9 - k 5 8 = 2 5 8 , what is the value of k?
-
Change the type and value of variables in the nutri data set according to Table 1.2 and save the data as a CSV file. The modified data should have eight categorical features, three floats, and two...
-
Visit the UCI Repository https://archive.ics.uci.edu/. Read the description of the data and download the Mushroom data set agaricuslepiota. data. Using pandas, read the data into a DataFrame called...
-
It frequently happens that a table with data needs to be restructured before the data can be analyzed using standard statistical software. As an example, consider the test scores in Table 1. 3 of 5...
Study smarter with the SolutionInn App