# One tailed test and z scores

X1 X2 The participants were randomly assigned to groups 1 and 2

34 45

32 35

15 32

27 28

20 34

1. t =

2. df =

3. For a ONE TAILED TEST, with p < .05, what is the Tabled Value, and is the above t significant or not significant?

4. A "Y Intercept" value of -6.44 is an indication of what?

5. As a sample size gets larger, the t value required for significance is

6. A z score of 1.96 is _________ percent from the center of the normal distribution.

7. The standard deviation of all children aged 8 to 12 is ____ the standard deviation of all children aged 2 to 8.

a. Greater than

b. Less than

c. Equal to

8. One sample has a and one has a .33.

Which sample has the larger range?

a.

b. .33

c. Neither

d. cannot be determined from the data given

https://brainmass.com/statistics/standard-deviation/one-tailed-test-scores-109358

#### Solution Preview

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X1 X2 The participants were randomly assigned to groups 1 and 2

34 45

32 35

15 32

27 28

20 34

1. t = -2.017

2. df = 8

3. For a ONE TAILED TEST, with p < ...

#### Solution Summary

The solution looks at one tailed tests and z scores. Participants in a study are randomly assignment to be analyzed. The expert determines if tabled values are significant or not.