IQ: Scores on a certain IQ test are known to have a mean of

100

. A random sample of

42

students attend a series of coaching classes before taking the test. Let

be the population mean IQ score that would occur if every student took the coaching classes. The classes are successful if

>100

. A test is made of the hypotheses

=:H0100

versus

>:H1100

. Consider three possible conclusions: (i) The classes are successful. (ii) The classes are not successful. (iii) The classes might not be successful.

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Part 1 of 2

Which of the three conclusions is best if

H0

is not rejected?

The best conclusion is (Choose one) .