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Unformatted text preview: e found. Of a sample of 500 men, 120 preferred white wine and of a
sample of 500 women, 210 preferred white wine. What do you conclude at α = .05 about the
claim that women are 25% higher than men on preference for white wine?
A. Reject the null hypothesis
B. Cannot reject the null hypothesis Critical value Z = 1.645  2.397 is not greater than 1.645 so fail to reject the null AACSB: Reflective Thinking
Bloom's: Analysis
Difficulty: Medium
Learning Objective: 5
Topic: Two independent population proportions 1927 Chapter 01  An Introduction to Business Statistics 135. The registrar at a state college is interested in determining whether there is a difference
of more than one credit hour between male and female students in the average number of
credit hours taken during a term. She selected a random sample of 60 male and 60 female
students and observed the following sample information. Setup the alternative hypothesis to test the claim.
A. µf  µm ≠ 0
B. µf  µm ≠ 1
C. µf  µm > 1
D. µf  µm < 1 AACSB: Reflective Thinking
Bloom's: Application
Difficulty: Medium
Learning Objective: 1
Topic: Two independent population means 1928 Chapter 01  An Introduction to Business Statistics 136. The registrar at a state college is interested in determining whether there is a difference
of more than one credit hour between male and female students in the average number of
credit hours taken during a term. She selected a random sample of 60 male and 60 female
students and observed the following sample information. Calculate the test statistic to be used in the analysis.
A. 5.67
B. 2.05
C. 1.73
D. 6.71 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 1
Topic: Two independent population means 1929 Chapter 01  An Introduction to Business Statistics 137. The registrar at a state college is interested in determining whether there is a difference
of more than one credit hour between male and female students in the average number of
credit hours taken during a term. She selected a random sample of 60 male and 60 female
students and observed the following sample information. What do you conclude if z = 1.73 at α = .01?
A. Reject the null hypothesis
B. Don't reject the null hypothesis
Z = 1.73 is not greater than Z.01 = 2.33 AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 1
Topic: Two independent population means 138. Suppose that a realtor is interested in comparing the price of midrange homes in two
cities in a Midwestern state. She conducts a small survey in the two cities looking at the price
of midrange homes. Assume equal population variances. Setup the alternative hypothesis to test the claim that there is a difference in the mean price of
midrange homes of the two cities.
A. µa  µb = 0
B. µa  µb ≠ 0
C. µa  µb > 0
D. µa  µb < 0 AACSB: Reflective Thinking
Bloom's: Application
Difficulty: Medium
Learning Objective: 2
Topic: Two independent population means 1930 Chapter 01  An Introduction to Business Statistics 139. Suppose that a realtor is interested in comparing the price of midrange homes in two
cities in a Midwestern state. She conducts a small survey in the two cities looking at the price
of midrange homes. Assume equal population variances. Calculate the pooled estimate of σ2 (rounded to nearest hundred)
A. 2100
B. 4,335,400
C. 4,932,000
D. 2200 AACSB: Analytic
Bloom's: Application
Difficulty: Hard
Learning Objective: 2
Topic: Two independent population means 1931 Chapter 01  An Introduction to Business Statistics 140. Suppose that a realtor is interested in comparing the price of midrange homes in two
cities in a Midwestern state. She conducts a small survey in the two cities looking at the price
of midrange homes. Assume equal population variances. Test the claim at
= .01 where the pooled variance = 4335357.143.
A. Can reject the null hypothesis
B. Cannot reject the null hypothesis AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 2
Topic: Two independent population means 1932 Chapter 01  An Introduction to Business Statistics 141. Suppose that a realtor is interested in comparing the price of midrange homes in two
cities in a Midwestern state. She conducts a small survey in the two cities looking at the price
of midrange homes. Assume equal population variances. Calculate the 95% confidence interval where pooled variance = 4335357.143
A. (649.24 5150.76)
B. (1566.21 7366.21)
C. (675.46 5124.54)
D. (766.67 6566.67)
[2900 ± 2.145 (1049.31)] = [2900 ± 2250.75] = [649.24, 5150.76] AACSB: Analytic
Bloom's: Application
Difficulty: Medium
Learning Objective: 2
Topic: Two independent population means Chapter 11
Experimental Design and Analysis of Variance
True / False Questions 1. A balanced complete factorial experiment is an experiment in which we select samples of
varying sizes.
True False 2. A oneway analysis of variance is a method that allows us to estimate and compare the
effects of several treatments on a response variable.
True False 3. In a completely randomize...
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This document was uploaded on 01/20/2014.
 Winter '14

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