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Bus 308 Week 2 Quiz

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1. Question : The one-sample t-test differs from the z-test in which way?
@Answer found in section 4.3 The One-sample t-Test, in Statistics for Managers

Student Answer: There are no parameter values involved in a t-test.

The t-test is more sensitive to minor differences between sample and population. With the t-test one can be confident of the normality of the data.

The t-test requires no parameter standard error of the mean.

Points Received: 0 of 1 Comments:

Question 2. Question : If a certifying agency raises the requirements for real estate agents, what sort of decision error is the agency protecting against?

Student Answer: Type I

Type II

Type III

Type IV

Instructor Explanation: Answer found in section 3.4 Statistical Significance, in Statistics for Managers

Points Received: 0 of 1 Comments:

Question 3. Question : What is the alternate hypothesis in a problem where sales group two is predicted to be “. . . significantly less productive than sales group one?”
@Answer found in sections 4.3 The One-sample t-Test and 4.4 Hypothesis Testing, in Statistics for Managers

Student Answer: HA: μ1
≠ μ 2 HA: μ 1= μ 2

HA: μ 1> μ2 HA: μ 1< μ 2

Points Received: 0 of 1 Comments:

Question 4. Question : Which of the following defines statistical significance?

Student Answer: The outcome is unlikely to have occurred by chance.

The outcome is important.

The outcome is unusual.

The outcome is one that can be explained by normal circumstances.

Instructor Explanation: Answer found in section 3.3 The z-test, in Statistics for Managers

Points Received: 1 of 1 Comments:

Question 5. Question : The standard error of the mean can be calculated

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