IQ: Scores on a certain IQ test are known to have a mean of 100
. A random sample of 51 students attend a series of coaching
classes before taking the test. Let μ be the population mean IQ
score that would occur if every student took the coaching classes.
The classes are successful if μ > 100 . A test is made of the
H0 :μ=100 versus H1 :μ>100. Consider three possible conclusions: (i) The classes are successful. (ii) The classes are not successful. (iii) The classes might not be successful.
Part 1 of 2
Which of the three conclusions is best if H0 is not rejected? The best conclusion is (Choose one) ▼ .
Part 2 of 2
Assume that the classes are not successful. Is it possible to make a Type II error? Explain.
(Choose one) ▼ , a type II error (Choose one) ▼ possible. The classes are not successful when the null hypothesis is (Choose one) ▼ .
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