Unformatted text preview: ective Thinking
Bloom's: Evaluation
Difficulty: Medium
Learning Objective: 1
Topic: Sign Test 11830 Chapter 01  An Introduction to Business Statistics 65. Five years ago, the average starting salary of a new college graduate with a major in
marketing was $34,000. A random sample of 10 graduates from this year's graduating class of
a local university yielded the following starting salaries in thousands of dollars: 28, 36, 25, 37,
35, 24, 38, 45, 39, and 36. The local university wants to determine if the median starting
salary for marketing graduates has increased in the last five years.
State the alternative hypothesis. Assume that the population of starting salaries in marketing is
not normally distributed.
A. H0: Md < 34,000
B. H0: Md > 34,000
C. H0: Md ≠ 34,000
D. H0: Md = 34,000
H0: Md ≤ 34,000 or H0: Md = 34,000, HA: Md > 34,000 AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Hard
Learning Objective: 1
Topic: Sign Test 66. Five years ago, the average starting salary of a new college graduate with a major in
marketing was $34,000. A random sample of 10 graduates from this year's graduating class of
a local university yielded the following starting salaries in thousands of dollars: 28, 36, 25, 37,
35, 24, 38, 45, 39, and 36. The local university wants to determine if the median starting
salary for marketing graduates has increased in the last five years.
Assume that the population of starting salaries in marketing is not normally distributed. Using
α = .05, can we conclude that the starting salaries increased in the last five years?
A. Reject the null hypothesis
B. Fail to reject the null hypothesis
H0: Md ≤ 34,000 or H0: Md = 34,000, HA: Md > 34,000
Reject H0 if pvalue is < α
pvalue = P(X ≥ 8) = (.0439) + (.0098) + (.001) = .0547
.0547 > .05, failed to reject H0
It appears that the median starting salary for marketing graduates has not significantly
increased. AACSB: Analytic Skills
Bloom's: Application
Difficulty: Hard
Learning Objective: 1
Topic: Sign Test 11831 Chapter 01  An Introduction to Business Statistics 67. Five years ago, the average starting salary of a new college graduate with a major in
marketing was $34,000. A random sample of 10 graduates from this year's graduating class of
a local university yielded the following starting salaries in thousands of dollars: 28, 36, 25, 37,
35, 24, 38, 45, 39, and 36. The local university wants to determine if the median starting
salary for marketing graduates has increased in the last five years.
Assume that the population of starting salaries in marketing is not normally distributed. The
pvalue is found to be .0547. Using α = .10, can we conclude that the starting salaries
increased in the last five years?
A. Yes
B. No
No (.0547 < .10) AACSB: Reflective Thinking
Bloom's: Evaluation
Difficulty: Medium
Learning Objective: 1
Topic: Sign Test 11832 Chapter 01  An Introduction to Business Statistics 68. An ebusiness/ecommerce information technology consulting company wants to compare
the effectiveness of three programming languages that its programmers use. Currently each
programming language is used by approximately 1/3 of the programmers employed by the
company. The director of programming division randomly selected 5 programmers from the
users of each of the three programming languages and assigned the same simple programming
task to each programmer. It is known that all three populations have highly skewed
distributions with extreme outliers.
Calculate the value of Ti (rank sum) for Program B. A. 23
B. 48
C. 49
D. 57 AACSB: Analytic Skills
Bloom's: Application
Difficulty: Medium
Learning Objective: 2
Topic: Rank Sum 11833 Chapter 01  An Introduction to Business Statistics 69. An ebusiness/ecommerce information technology consulting company wants to compare
the effectiveness of three programming languages that its programmers use. Currently each
programming language is used by approximately 1/3 of the programmers employed by the
company. The director of programming division randomly selected 5 programmers from the
users of each of the three programming languages and assigned the same simple programming
task to each programmer. It is known that all three populations have highly skewed
distributions with extreme outliers.
The rank sum values for each of the programming groups are: T1 = 23, T2 = 48, and T3 = 49.
At α = .05, does the median time required to program a simple task differ between the three
different programming languages?
A. H = 4.34, reject the null hypothesis
B. H = 4.24, fail to reject the null hypothesis
C. H = 5.99, reject the null hypothesis
D. H = 5.99, fail to reject the null hypothesis
4.34 < 5.99, failed to reject H0. It appears that the median time to complete the simple programming task does not
significantly differ among the three different programming languages. AACSB: Analytic Skills
Bloom's: Application
Difficulty: Medium
Learning Objective: 2
Topic: Rank Sum 11834 Chapter 01  An...
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 Winter '14
 Frequency, Frequency distribution, Histogram, AACSB, Statistical charts and diagrams

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