Suppose a professor wants to know if students in her statistics class have a good grasp of basic math. Six students are chosen at random from the class and given a math proficiency test. The professor wants the class to be able to score above 70 on the test. The six students get the following scores: 62, 92, 75, 68, 83, 95. Can the professor have 90% confidence that the mean score for the class on the test would be above 7O? Please show us your work in arriving at your conclusion and interpret the results in the context of the problem. Also comment or review at least 2 students work by correcting any error in their work and telling us why you agree or disagree with their finding. Remember to make a substantive remark that adds to our knowledge.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Suppose a professor wants to know if students in her statistics
class have a good grasp of basic math. Six students are chosen at
random from the class and given a math proficiency test. The
professor wants the class to be able to score above 70 on the test.
The six students get the following scores: 62, 92, 75, 68, 83,
95. Can the professor have 90% confidence that the mean score
for the class on the test would be above 70? Please show us your
work in arriving at your conclusion and interpret the results in the
context of the problem. Also comment or review at
least 2 students work by correcting any error in their work and
telling us why you agree or disagree with their finding. Remember
to make a substantive remark that adds to our knowledge.
Transcribed Image Text:Suppose a professor wants to know if students in her statistics class have a good grasp of basic math. Six students are chosen at random from the class and given a math proficiency test. The professor wants the class to be able to score above 70 on the test. The six students get the following scores: 62, 92, 75, 68, 83, 95. Can the professor have 90% confidence that the mean score for the class on the test would be above 70? Please show us your work in arriving at your conclusion and interpret the results in the context of the problem. Also comment or review at least 2 students work by correcting any error in their work and telling us why you agree or disagree with their finding. Remember to make a substantive remark that adds to our knowledge.
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