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Reject h0 if t t0511 14 t 35 1 10 145 145

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Unformatted text preview: on holds AACSB: Analytic Skills Bloom's: Application Difficulty: Hard Learning Objective: 2 Topic: Rank Sum 1-1856 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 1-1857 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 1-1858 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 1-1859 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 1-1860 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 1-1861 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 1-1862 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 1-1863 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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This document was uploaded on 01/20/2014.

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