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gtnhenbr [62]
3 years ago
5

Imagine that a researcher appropriately conducts a two-tailed, independent-samples t test with an alpha level of 0.05 (5%). The

first group has degrees of freedom equal to 19. The second group has degrees of freedom equal to 21. What is the critical value (as a t statistic) that would cut off the upper 2.5% of the corresponding sampling distribution. Please provide three decimal places when reporting your answer.

Mathematics
1 answer:
devlian [24]3 years ago
6 0

Answer:

For the first group, with 19 degrees of freedom, the critical value is t=2.093.

For the second group, with 21 degrees of freedom, the critical value is t=2.080.

Step-by-step explanation:

The critical value of the t-statistic depends on the significance level and the degrees of freedom of the sample.

For a significance level of 0.05, for a two-tailed test, there is an upper 2.5% and a lower 2.5%.

For the first group, with 19 degrees of freedom, the critical value is t=2.093.

For the second group, with 21 degrees of freedom, the critical value is t=2.080.

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Multiply the bracket by 4

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4x+6+10=17

4x+16= 17

4x+16-16= 17-16

4x= 1

divide by 4 for 4x and 1

4x/4= 1/4

x= 1/4 or in decimal form , x= 0.25

Check answers by using substitution method:

4(1/4)+6+3+7= 17

1+9+7= 17

17= 17

Answers can be x= 1/4 or x= 0.25

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Answer:

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Step-by-step explanation:

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