Question

Which of the following statements about hypothesis testing is true?

1. If the data provide sufficient evidence for the alternative hypothesis, then the conclusion is to reject H0.

2. A hypothesis test provides a plausible range of values for a parameter.

3. If the data provide sufficient evidence for the null hypothesis, then the conclusion is to reject H1.

4. A hypothesis test uses sample data to determine which of two competing hypotheses is true.

For a two-sided hypothesis test in which the test statistic is zobs, which of the following critical values is appropriate if a 1% significance level is desired?

1. 1.645

2. 1.960

3. 2.326

4. 2.576

Answer 1

Solution:

Q . Which of the following statements about hypothesis testing is true?

If the data provide sufficient evidence for the alternative hypothesis, then the conclusion is to reject H0.

Q.

For a two-sided hypothesis test in which the test statistic is zobs, which of the following critical values is appropriate if a 1% significance level is desired?

= 1% = 0.01

/2 = 0.01/2 = 0.005

For two sided test , the critical values are   

Now , using z table ,

So , answer is

2.576