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Math Help - Significance level!!

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    Significance level!!

    200 student from each of two different courses sat the same exam (i.e. a total of 400 students). The 200 students in course A scored a mean grade of 68 with a standard deviation of 20, while those in course B had a mean score of 73 with a standard deviation of 18. Is there any reason to believe that students in course B are significantly better than those in course A? Use the 5% significance level.
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    Quote Originally Posted by matty888 View Post
    200 student from each of two different courses sat the same exam (i.e. a total of 400 students). The 200 students in course A scored a mean grade of 68 with a standard deviation of 20, while those in course B had a mean score of 73 with a standard deviation of 18. Is there any reason to believe that students in course B are significantly better than those in course A? Use the 5% significance level.
    Where exactly are you stuck? Reading this might help: Two-Sample t-Test<BR><FONT SIZE=-1>Large Samples</FONT>
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