Hypothesis testing questions please help~~

1.

true or false?

a.The probability of a type II error is the complement of the probability of a type I error.

b.The type I and type II errors are conditional probabilities.

c.If the null hypothesis is false, not rejecting the null hypothesis would be a type II error.

d.A type I error can only occur if the null hypothesis is true.

e.If the null hypothesis is true, accepting the alternative hypothesis would be a type I error.

2.

Consider the following statements concerning the methodology of classical hypothesis testing: A. The alternative hypothesis is assumed to be true until there is sufficient sample evidence to disprove it. B. The statements of appropriate null and alternative hypotheses are specific to the problem wording. C. The null hypothesis statement represents the status quo.

a.only A is false

b.only B is false

c.only A and B are false

d.only B and C are false

e.all three statements are true

3.

It is stipulated in the Queensland award that a full-time bar attendant should work 36.75 hours per week. However, the secretary of the Queensland Council of Unions believes that the average work hours per week of full-time bar attendants is not that specified in the award. From a random sample of 53 workers, it was found that the average working week was 37.08 hours with a variance of 1.24 hours squared. On the basis of this evidence, the union secretary would

A.not reject the null hypothesis at the 10% level.

B.reject the null hypothesis at the 10% level but not at the 5% level.

C.reject the null hypothesis at the 5% level but not at the 2% level.

D.reject the null hypothesis at the 2% level but not at the 1% level.