Sampling errors tend to be larger with: Question 21 options: larger samples smal

Question

Sampling errors tend to be larger with:

Question 21 options:

larger samples

smaller samples

unbiased samples

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Question 22

Correlation is always evidence of causation.

Question 22 options:

true

false

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Question 23

According to the text, the shape of the t distribution _____________ as the sample size increases.

Question 23 options:

Decreases

Approaches a skewed distribution

Is three or more groups

Approaches a normal distribution

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Question 24

14 + 3 – (9 x 7)

Question 24 options:

14 + 3 – 63

14 + 3 -   (-63)

80

-52

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Question 25

HA:µ1>µ2 is an example of a __________.

Question 25 options:

Type I Error  

Two-Tailed Hypothesis

One-Tailed Hypothesis

Null Hypothesis

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Question 26

In a study on the effect of caffeine on driving performance, researchers predict that those in the group given caffeine will exhibit poorer driving performance. The researcher is using a _________ hypothesis.

Question 26 options:

Two-tailed

Bivariate

Non-Directional

One-tailed

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Question 27

If the tabled value of t is 3.352 and the calculated value is t(18) = 1.59, p < .05, what do you conclude?

Question 27 options:

Significant findings (p < .05)

Non-significance (p >.05)

It would depend on the tabled “r” value

Cannot conclude from this data

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Question 28

We would expect a correlation of children’s ages and their heights to be:

Question 28 options:

Positive and small

Positive and large

Negative and small

Negative and large

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Question 29

What statistic would determine if there were a significant XY relationship between two variables?

Question 29 options:

T-test

CHI square

Pearson "r”

F test

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Question 30

The statistics: z, t, F, r, are all known as __________ statistics.

Question 30 options:

non-robust

causal

non parametric

parametric

a)

larger samples

b)

smaller samples

c)

unbiased samples

Explanation / Answer

Answer-21:

Sampling Errors tend to be larger with smaller samples

Option-B is the correct answer

Answer-22:

Correlation is always evidence of causation - False

Option-B is the correct answer

Answer-23:

According to the text, the shape of the t distribution Approaches a Normal Distribution as the sample size increases.

Option-D is the correct answer

Answer-24:

14 + 3 – (9 x 7) = 14 + 3 - 63

Option-A is the correct answer

Answer-25:

HA:µ1>µ2 is an example of a One-Tailed Hypothesis

Option-C is the correct answer

Answer-26:

In a study on the effect of caffeine on driving performance, researchers predict that those in the group given caffeine will exhibit poorer driving performance. The researcher is using a __One-Tailed_______ hypothesis.

Option-D is the correct answer

Answer-27:

If the tabled value of t is 3.352 and the calculated value is t(18) = 1.59, p < .05, what do you conclude? - Significant findings (p < .05)

Option-A is the correct answer

Answer-28:

We would expect a correlation of children’s ages and their heights to be: Positive and Large

Option-B is the correct answer

Answer-29:

What statistic would determine if there were a significant XY relationship between two variables? - Pearson's ''r''

Option-C is the correct answer

Answer-30:

The statistics: z, t, F, r, are all known as ___Parametric_______ statistics.

Option-D is the correct answer

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