A 95% confidence level for the difference between u1 and u2 runs from -2 to +6. From this we can infer that
a. u1 is probably greater than u2.
b. u1 is probably less than u2.
c. there may be no difference at all between u1 and u2.
d. the difference between u1 and u2 is not very large in any case.

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  1. Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have already been answered in another post. Thank you.

    See your later post.

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