The Student Room Group

Business analytics questions help please

1. A survey of 36 students attending a tutorial identified 24 who had eaten chocolate in the last 24 hours. Assuming them to be a random sample of students use the computer output below to carry out the following hypotheses tests.

(i) Test the hypothesis that 80% of students will have eaten chocolate in the 24 hour period against the alternative that it is not 80% at each of the 5% and 1% level of significance.
(ii) Test the hypothesis that 80% or more of students will have eaten chocolate in the 24 hour period against the alternative that it is less at each of the 5% and 1% level of significance.
(iii) Test the hypothesis that 80% or less of students will have eaten chocolate in the 24 hour period against the alternative that it is more at each of the 5% and 1% level of significance.
(iiii) If the true proportion was 70% classify the outcome of each of the 6 tests as:
a. Correctly reject a false null hypothesis
b. Correctly accept a true null hypothesis
c. Type 1 Error
d. Type 2 Error

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