Exam 8: Hypothesis Testing I: the One-Sample Case

With alpha set at .05,the Critical Region for a two-tailed test would begin at $\pm$ 1.96.In a one-tailed test at the same alpha level the Critical Region would begin at

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Question 1

Correct Answer:

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Which of the following is NOT an assumption required for a test of hypothesis with a single sample mean?

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Question 2

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The probability of Type I error is

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Question 3

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Verified

A sample of people attending a professional football game averages 13.7 years of formal education while the surrounding community averages 12.1.The difference is significant at the .05 level.What could we conclude?

(Multiple Choice)

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Question 4

The t distribution,compared to the Z distribution,is

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Question 5

Like estimation procedures,hypothesis testing involves the risk that the sample

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Question 6

In tests of significance,if the test statistic falls in the critical region,we may conclude that

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Question 7

Do sex education classes and free clinics that offer counseling for teenagers reduce the number of pregnancies among teenagers? The appropriate test of hypothesis would be

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Question 8

In your own words,define and explain each of the following terms and concepts: a.the null hypothesis b.Type I (alpha) error c.Sampling distribution d.One-tailed test

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Question 9

Republicans average 1.4 children while the state as a whole averages 1.7 children.The Z scored computed in this test is 0.78 and the alpha level is 0.05.Therefore,the difference in size of family

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Question 10

A researcher selected a sample of 268 former student athletes from a list of graduates of a large university.A total of 17% of the sample of athletes had earned graduate degrees as compared 14% of all graduates.Is the difference statistically significant? Follow the five step model and state all important decisions.Make sure that you interpret the results in terms of the original research question.

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Question 11

When we decide on a value for alpha,we are

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Question 12

Given the same alpha level,the one-tailed test

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Question 13

All tests of hypothesis are based on the assumption that

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Question 14

Which of the following combinations would result in a Type II error? The null hypothesis is actually and our decision in Step 5 is to the null hypothesis.

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Question 15

If the test statistic does not fall in the critical region,we

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Question 16

The null hypothesis in the one sample case is a statement of

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Question 17

The higher the alpha level,the more likely we will

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Question 18

The records of the state Division of Motor Vehicles reveals that 23% of all drivers have been ticketed at least once.Twenty five percent of a random sample of older drivers in the state have gotten at least one ticket.This difference has been tested and the researcher has failed to reject the null hypothesis.What can be concluded?

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Question 19

Under what conditions would you use the t distribution to test the significance of a single sample proportion?

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Question 20

Showing 1 - 20 of 55

With alpha set at .05,the Critical Region for a two-tailed test would begin at $\pm$ 1.96.In a one-tailed test at the same alpha level the Critical Region would begin at

Which of the following is NOT an assumption required for a test of hypothesis with a single sample mean?

The probability of Type I error is

A sample of people attending a professional football game averages 13.7 years of formal education while the surrounding community averages 12.1.The difference is significant at the .05 level.What could we conclude?

The t distribution,compared to the Z distribution,is

Like estimation procedures,hypothesis testing involves the risk that the sample

In tests of significance,if the test statistic falls in the critical region,we may conclude that

Do sex education classes and free clinics that offer counseling for teenagers reduce the number of pregnancies among teenagers? The appropriate test of hypothesis would be

In your own words,define and explain each of the following terms and concepts: a.the null hypothesis b.Type I (alpha) error c.Sampling distribution d.One-tailed test

Republicans average 1.4 children while the state as a whole averages 1.7 children.The Z scored computed in this test is 0.78 and the alpha level is 0.05.Therefore,the difference in size of family

When we decide on a value for alpha,we are

Given the same alpha level,the one-tailed test

All tests of hypothesis are based on the assumption that

Which of the following combinations would result in a Type II error? The null hypothesis is actually and our decision in Step 5 is to the null hypothesis.

If the test statistic does not fall in the critical region,we

The null hypothesis in the one sample case is a statement of

The higher the alpha level,the more likely we will

Under what conditions would you use the t distribution to test the significance of a single sample proportion?

Introduction

Basic Descriptive Statistics: Percentages Ratios and Rates Frequency Distributions

Charts and Graphs

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction in Inferential Statistics, the Sampling Distribution, and Estimation

Hypothesis Testing II: the Two-Sample Case

Hypothesis Testing III: the Analysis of Variance

Hypothesis Testing Iv: Chi Square

Introduction to Bivariate Association and Measures of Association for Variables Measured at the Nominal Level

Association Between Variables Measured at the Ordinal Level

Association Between Variables Measured at the Interval-Ratio Level

Partial Correlation and Multiple Regression and Correlation

Filters

Exam 8: Hypothesis Testing I: the One-Sample Case

With alpha set at .05,the Critical Region for a two-tailed test would begin at ±\pm± 1.96.In a one-tailed test at the same alpha level the Critical Region would begin at

Which of the following is NOT an assumption required for a test of hypothesis with a single sample mean?

The probability of Type I error is

A sample of people attending a professional football game averages 13.7 years of formal education while the surrounding community averages 12.1.The difference is significant at the .05 level.What could we conclude?

The t distribution,compared to the Z distribution,is

Like estimation procedures,hypothesis testing involves the risk that the sample

In tests of significance,if the test statistic falls in the critical region,we may conclude that

Do sex education classes and free clinics that offer counseling for teenagers reduce the number of pregnancies among teenagers? The appropriate test of hypothesis would be

In your own words,define and explain each of the following terms and concepts: a.the null hypothesis b.Type I (alpha) error c.Sampling distribution d.One-tailed test

Republicans average 1.4 children while the state as a whole averages 1.7 children.The Z scored computed in this test is 0.78 and the alpha level is 0.05.Therefore,the difference in size of family

When we decide on a value for alpha,we are

Given the same alpha level,the one-tailed test

All tests of hypothesis are based on the assumption that

Which of the following combinations would result in a Type II error? The null hypothesis is actually ____ and our decision in Step 5 is to ____ the null hypothesis.

If the test statistic does not fall in the critical region,we

The null hypothesis in the one sample case is a statement of

The higher the alpha level,the more likely we will

Under what conditions would you use the t distribution to test the significance of a single sample proportion?

Introduction

Basic Descriptive Statistics: Percentages Ratios and Rates Frequency Distributions

Charts and Graphs

Measures of Central Tendency

Measures of Dispersion

The Normal Curve

Introduction in Inferential Statistics, the Sampling Distribution, and Estimation

Hypothesis Testing II: the Two-Sample Case

Hypothesis Testing III: the Analysis of Variance

Hypothesis Testing Iv: Chi Square

Introduction to Bivariate Association and Measures of Association for Variables Measured at the Nominal Level

Association Between Variables Measured at the Ordinal Level

Association Between Variables Measured at the Interval-Ratio Level

Partial Correlation and Multiple Regression and Correlation

Filters

With alpha set at .05,the Critical Region for a two-tailed test would begin at $\pm$ 1.96.In a one-tailed test at the same alpha level the Critical Region would begin at

Which of the following combinations would result in a Type II error? The null hypothesis is actually and our decision in Step 5 is to the null hypothesis.