A study is conducted to determine if a new teaching method is more helpful to th
ID: 2947897 • Letter: A
Question
A study is conducted to determine if a new teaching method is more helpful to the students learning the material than the old method. The mean score on the final exam for a course using the old method is 75. Ten randomly selected students who were taught using the new method take the final exam. Their scores are shown in the table below.
Use a 0.05 significance level to test the claim that on average, students perform better on the final exam with the new teaching method.
(a) What kind of test should be used?
A. Left-Tailed
B. Right-Tailed
C. Two-Tailed
D. It does not matter.
(b) The test statistic is
(c) The P-value is
Person A B C D E F G H I J Test Score 89 68 73 92 85 82 75 70 97 93Explanation / Answer
The statistical software output for this problem is:
One sample T hypothesis test:
? : Mean of variable
H0 : ? = 75
HA : ? > 75
Hypothesis test results:
Hence,
a) Right tailed test
b) Test statistic = 2.25
c) P - value = 0.0254
Variable Sample Mean Std. Err. DF T-Stat P-value Data 82.4 3.2870115 9 2.2512851 0.0254Related Questions
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