You want to demonstrate that a sample of n = 16 has a different mean than a population where F1F1F1S1F1F1F10 = 9. If x̄ = 7 and s = 3, what is the correct decision?

A) Fail to reject the null. B) Reject the null. C) Fail to reject the alternative. D) none of these A) Fail to reject the null. B) Reject the null. C) Fail to reject the alternative. D) none of these B

You want to compare a sample of n = 100 to a population where F1F1F1S1F1F1F10 = 6.5. If x̄ = 8 and s = 4, what is the value of the test statistic?

A) 37.5 B) 3.75 C) 7.5 D) 1.5 A) 37.5 B) 3.75 C) 7.5 D) 1.5

You want to compare a sample of n = 16 to a population where F1F1F1S1F1F1F10 = 2 and F1F1F1S1F1F1F10 = 10. If x̄ = 6, what is the value of the test statistic?

A) -16 B) -4 C) -8 D) -11 A) -16 B) -4 C) -8 D) -11

You want to compare a sample of n = 81 to a population where F1F1F1S1F1F1F10 = 27. If x̄ = 26 and s = 3, what is the value of the unstandardized effect size?

A) .33 B) -.33 C) -3.03 D) -1 A) .33 B) -.33 C) -3.03 D) -1

You collect a sample of n = 10 and want to know if the sample is significantly different than the population. If F1F1F1S1F1F1F10 is unknown and F1F1F1S1F1F1F10 = .05, what is the appropriate critical value?

A) -2.262 B) +2.262 C) both a and b D) none of these A) -2.262 B) +2.262 C) both a and b D) none of these

You want to demonstrate that a sample of n = 100 has a higher mean than a population where F1F1F1S1F1F1F10 = 5 and F1F1F1S1F1F1F10 = 11. If x̄ = 10, what is the correct decision?

A) Fail to reject the null. B) Reject the null. C) Fail to reject the alternative. D) Accept the alternative. A) Fail to reject the null. B) Reject the null. C) Fail to reject the alternative. D) Accept the alternative.

Exam 8: Tests for Significance: Z-Tests and One-Sample T-Tests

You want to demonstrate that a sample of n = 16 has a different mean than a population where  = 9. If x̄ = 7 and s = 3, what is the correct decision?

Free

(Multiple Choice)

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Question 1

Correct Answer:

Verified

If you run a non-directional z-test and find that z = 1.68, you should reject the null.

Free

(True/False)

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Question 2

Correct Answer:

Verified

False

Which of the following compares a single sample mean to a given population mean?

Free

(Multiple Choice)

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Question 3

Correct Answer:

Verified

A one-sample test can be characterized as a mean difference expressed in ______.

(Multiple Choice)

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Question 4

When conducting a two-tailed test at  = .05, you'd expect 2.5% of the sampling distribution to be in each tail.

(True/False)

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Question 5

You do not need to know the population mean to conduct a z-test.

(True/False)

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Question 6

The basic question we ask when conducting a one-sample test is ______.

(Multiple Choice)

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Question 7

You want to compare a sample of n = 100 to a population where  = 6.5. If x̄ = 8 and s = 4, what is the value of the test statistic?

(Multiple Choice)

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Question 8

How do you know if a z-test or one-sample t-test is appropriate given a particular dataset?

(Essay)

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Question 9

You draw a sample of n = 30 from a population where  = 10 and  = 2. If x̄ = 8, z = -5.48.

(True/False)

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Question 10

A z-test is a type of one-sample test.

(True/False)

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Question 11

You want to compare a sample of n = 16 to a population where  = 2 and  = 10. If x̄ = 6, what is the value of the test statistic?

(Multiple Choice)

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Question 12

When we compute a z-statistic, we are determining how many standard errors the sample mean is away from the population mean.

(True/False)

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Question 13

You should conduct a z-test instead of a one-sample t-test when ______.

(Multiple Choice)

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Question 14

Why should you calculate an effect size?

(Multiple Choice)

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Question 15

You want to compare a sample of n = 81 to a population where  = 27. If x̄ = 26 and s = 3, what is the value of the unstandardized effect size?

(Multiple Choice)

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Question 16

You should conduct a one-sample t-test instead of a z-test when ______.

(Multiple Choice)

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Question 17

You collect a sample of n = 10 and want to know if the sample is significantly different than the population. If  is unknown and  = .05, what is the appropriate critical value?

(Multiple Choice)

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Question 18

You want to demonstrate that a sample of n = 100 has a higher mean than a population where  = 5 and  = 11. If x̄ = 10, what is the correct decision?

(Multiple Choice)

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Question 19

In order to conduct any one-sample test, you must always have a ______.

(Multiple Choice)

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Question 20

Showing 1 - 20 of 56

You want to demonstrate that a sample of n = 16 has a different mean than a population where  = 9. If x̄ = 7 and s = 3, what is the correct decision?

If you run a non-directional z-test and find that z = 1.68, you should reject the null.

Which of the following compares a single sample mean to a given population mean?

A one-sample test can be characterized as a mean difference expressed in ______.

When conducting a two-tailed test at  = .05, you'd expect 2.5% of the sampling distribution to be in each tail.

You do not need to know the population mean to conduct a z-test.

The basic question we ask when conducting a one-sample test is ______.

You want to compare a sample of n = 100 to a population where  = 6.5. If x̄ = 8 and s = 4, what is the value of the test statistic?

How do you know if a z-test or one-sample t-test is appropriate given a particular dataset?

You draw a sample of n = 30 from a population where  = 10 and  = 2. If x̄ = 8, z = -5.48.

A z-test is a type of one-sample test.

You want to compare a sample of n = 16 to a population where  = 2 and  = 10. If x̄ = 6, what is the value of the test statistic?

When we compute a z-statistic, we are determining how many standard errors the sample mean is away from the population mean.

You should conduct a z-test instead of a one-sample t-test when ______.

Why should you calculate an effect size?

You want to compare a sample of n = 81 to a population where  = 27. If x̄ = 26 and s = 3, what is the value of the unstandardized effect size?

You should conduct a one-sample t-test instead of a z-test when ______.

You collect a sample of n = 10 and want to know if the sample is significantly different than the population. If  is unknown and  = .05, what is the appropriate critical value?

You want to demonstrate that a sample of n = 100 has a higher mean than a population where  = 5 and  = 11. If x̄ = 10, what is the correct decision?

In order to conduct any one-sample test, you must always have a ______.

The Language of Statistics

Working With Numbers and Data Display

Central Tendency and Variability

Probability Distributions

Sampling Distributions

Estimation and Confidence Intervals

Hypothesis Testing

Tests for Significance: Paired and Independent-Samples T-Test

Analysis of Variance Anova

CHI-Squared Tests of Fit

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