What kind of test should be used? A. One-Tailed B. Two-Tailed C. It does not matter. (b) The test statistic is (rounded to 2 decimals). (c) The P-value is
A study is conducted to determine if a newly designed text book is more helpful to learning the material than the old edition. The mean score on the final exam for a course using the old edition is 75. Ten randomly selected people who used the new text take the final exam. Their scores are shown in the table below.
| Person | A | B | C | D | E | F | G | H | I | J |
| Test Score | 88 | 90 | 84 | 96 | 81 | 67 | 75 | 72 | 73 | 94 |
Use a 0.010.01 significance level to test the claim that people do better with the new edition. Assume the standard deviation is 10.9. (Note: You may wish to use statistical software.)
(a) What kind of test should be used?
A. One-Tailed
B. Two-Tailed
C. It does not matter.
(b) The test statistic is (rounded to 2 decimals).
(c) The P-value is
(d) Is there sufficient evidence to support the claim that people do better than 75 on this exam?
A. Yes
B. No
(e) Construct a 9999% confidence interval for the mean score for students using the new text.
<?<<μ<
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
