Question

Please answer with proper calculations: value 18 15 20 21 1. The degrees of freedom for...

Please answer with proper calculations:

value

18

15

20

21

1. The degrees of freedom for the test are:

2. The critical value of t for the test is:

3. The calculated t statistic is

4. Based on the statistical test you can

>reject the null hypothesis.

>fail to reject the null hypothesis.

>can not determine.

>redo the test.

5. The null hypothesis would be:

>there is no difference between the two population means.

>there is a difference between the two poulation means.

>there is only a positive difference between the two populations means.

>there is only a negative difference between the two populations.

6. The alternative hypothesis would be:

>the new catalyst will outperform the older catalyst.

>the new catalyst will not outperform the older catalalyst.

>there is no difference between the two catalysts.

>cannot determine.

Math   Statistics-And-Probability   
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