A college instructor gave identical tests to two randomly sampled groups of 35 students. One group took the test on paper and the other took it online. Following are the test scores: Paper- 79, 75, 49, 78, 73, 81,70, 63, 79 ,65, 60, 74, 64, 64, 74, 69, 57, 65, 61, 58, 92, 71, 69, 66, 71, 68, 67, 81, 78, 80, 76, 67, 49, 56, 45, Online- 79, 75, 71, 81, 56, 72, 49, 75, 63, 81, 74, 72, 71, 73, 83, 59, 78, 65, 53, 47, 63, 82, 81, 76, 65, 82, 78, 76, 65, 72, 85, 84, 81, 50, 79, a. Can you conclude that there is a difference in the mean score between the paper and online testing? Use a 5% level of significance. b. Construct a 95% confidence interval for the difference in mean scores between paper and online testing. Please explain how to know what test needs to be performed and how to solve it using a Ti83 calculator. Thank you
A college instructor gave identical tests to two
randomly sampled groups of 35 students. One
group took the test on paper and the other took
it online. Following are the test scores:
Paper- 79, 75, 49, 78, 73, 81,70,
63, 79 ,65, 60, 74, 64, 64,
74, 69, 57, 65, 61, 58, 92,
71, 69, 66, 71, 68, 67, 81,
78, 80, 76, 67, 49, 56, 45,
Online- 79, 75, 71, 81, 56, 72, 49,
75, 63, 81, 74, 72, 71, 73,
83, 59, 78, 65, 53, 47, 63,
82, 81, 76, 65, 82, 78, 76,
65, 72, 85, 84, 81, 50, 79,
a. Can you conclude that there is a difference in the
testing? Use a 5% level of significance.
b. Construct a 95% confidence interval for the
difference in mean scores between paper and
online testing.
Please explain how to know what test needs to be performed and how to solve it using a Ti83 calculator.
Thank you
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