Please answer them with proper calculations: 1. The degrees of freedom for the test are: 18...
Please answer them with proper calculations:
1. The degrees of freedom for the test are:
18
15
20
21
2. The critical value of t for the test is:
2.101
2.156
2.0123
1.5633
3. The calculated t statistic is
2.44
3.01
2.12
5.123
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.
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Please answer them with proper
calculations:
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