Unformatted text preview: on holds AACSB: Analytic Skills
Bloom's: Application
Difficulty: Hard
Learning Objective: 2
Topic: Rank Sum 11856 Chapter 01  An Introduction to Business Statistics 92. A student is trying to decide if it is cheaper to order blank CDs over the internet or to buy
them at local electronic stores. Listed below are the prices (in dollars) quoted for boxes of 200
blank CDs from various manufacturers. Set up the alternative hypothesis for the claim that buying over the Internet (I) is cheaper than
buying from the local electronics stores (E).
A. HA: DI is shifted to the right of DE
B. HA: DI is shifted to the left or right of DE
C. HA: DI is shifted to the left of DE
D. HA: DI is identical to DE
H0: DI and DE are identical probability distributions vs
HA: DI is shifted to the left of DE AACSB: Analytic Skills
Bloom's: Comprehension
Difficulty: Hard
Learning Objective: 2
Topic: Rank Sum 11857 Chapter 01  An Introduction to Business Statistics 93. A student is trying to decide if it is cheaper to order blank CDs over the internet or to buy
them at local electronic stores. Listed below are the prices (in dollars) quoted for boxes of 200
blank CDs from various manufacturers. Calculate the value of TI and TE.
A. 60, 190
B. 125, 60
C. 111,190
D. 111,125
TI = 60 and TE = 190
AACSB: Analytic Skills
Bloom's: Application
Difficulty: Medium
Learning Objective: 2
Topic: Rank Sum 11858 Chapter 01  An Introduction to Business Statistics 94. A student is trying to decide if it is cheaper to order blank CDs over the internet or to buy
them at local electronic stores. Listed below are the prices (in dollars) quoted for boxes of 200
blank CDs from various manufacturers. What is the test statistic T?
A. 111
B. 190
C. 60
D. 120
T = 190
T = TE since nI > nE AACSB: Analytic Skills
Bloom's: Application
Difficulty: Medium
Learning Objective: 2
Topic: Rank Sum 11859 Chapter 01  An Introduction to Business Statistics 95. A student is trying to decide if it is cheaper to order blank CDs over the internet or to buy
them at local electronic stores. Listed below are the prices (in dollars) quoted for boxes of 200
blank CDs from various manufacturers. On the average, can it be concluded that Internet purchases are significantly less than
electronics store purchases? Test at
= .05
A. Reject the null hypothesis, Internet purchases are less than local stores
B. Fail to reject the null hypothesis, not enough evidence to show that Internet purchases are
less than local stores
Can reject H0, so we have evidence that Internet purchases are significantly less than local
electronics stores
T = 190
From the Wilcoxon Rank Sum table for nI = 10 and nE = 9, TU = 111
If T ≥ TU then reject null hypothesis 190 ≥ 111 AACSB: Analytic Skills
Bloom's: Application
Difficulty: Medium
Learning Objective: 2
Topic: Rank Sum 11860 Chapter 01  An Introduction to Business Statistics 96. A study was conducted to investigate the effect of an intervention protocol on IQ tests.
Nine randomly selected students were tested. Set up the alternative hypothesis for the claim that the intervention protocol is effective in
increasing scores.
A. H0: The probability distribution of test scores before and after the intervention protocol is
identical.
B. H0: The probability distribution of test scores before the protocol has shifted to the left of
the probability distribution of the test scores after the protocol.
C. H0: The probability distribution of test scores before the protocol has shifted to the right of
the probability distribution of the test scores after the protocol.
D. H0: The probability distribution of test scores before the protocol has shifted to the left or
right of the probability distribution of the test scores after the protocol. AACSB: Reflective Thinking
Bloom's: Knowledge
Difficulty: Hard
Learning Objective: 3
Topic: Signed Ranks test 11861 Chapter 01  An Introduction to Business Statistics 97. A study was conducted to investigate the effect of an intervention protocol on IQ tests.
Nine randomly selected students were tested. Calculate T and T+
A. 44, 1
B. 38.5, 6.5
C. 45.5, 2.5
D. 32.5, 12.5
T = 38.5 and T+ = 6.5
T is sum of ranks associated with the negative paired differences
T+ is sum of ranks associated with the positive paired differences AACSB: Analytic Skills
Bloom's: Application
Difficulty: Hard
Learning Objective: 3
Topic: Signed Ranks test 11862 Chapter 01  An Introduction to Business Statistics 98. A study was conducted to investigate the effect of an intervention protocol on IQ tests.
Nine randomly selected students were tested. What is the rejection point T0 for
A. 8
B. 6
C. 4
D. 6.5 = .05? T0 = 8 (n = 9, α = .05) AACSB: Analytic Skills
Bloom's: Comprehension
Difficulty: Medium
Learning Objective: 3
Topic: Signed Ranks test 11863 Chapter 01  An Introduction to Business Statistics 99. A study was conducted to investigate the effect of an intervention protocol on IQ tests.
Nine randomly selected students were tested. At
= .05, test to determine if the protocol increases test scores.
A. Reject the nu...
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 Winter '14
 Frequency, Frequency distribution, Histogram, AACSB, Statistical charts and diagrams

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