STAT TECH IN BUSINESS & ECON LL\AC
18th Edition
ISBN: 9781264720545
Author: Lind
Publisher: MCG
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Chapter 15, Problem 9E
To determine
Check whether people can conclude that there is a difference in the proportion of vines infested using Pernod 5 as opposed to Action.
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The Damon family owns a large grape vineyard in western New York along Lake Erie. The grapevines must be sprayed at the
beginning of the growing season to protect against various insects and diseases. Two new insecticides have just been marketed:
Pernod 5 and Action. To test their effectiveness, three long rows were selected and sprayed with Pernod 5, and three others were
sprayed with Action. When the grapes ripened, 440 of the vines treated with Pernod 5 were checked for infestation. Likewise, a
sample of 360 vines sprayed with Action were checked. The results are:
Number of Vines Checked (sample
size)
Insecticide
Number of Infested Vines
Pernod 5
440
30
Action
360
36
At the 0.02 significance level, can we conclude that there is a difference in the proportion of vines infested using Pernod 5 as opposed
to Action? Hint. For the calculations, assume the Pernod 5 as the first sample.
1. State the decision rule. (Negative amounts should be indicated by a minus sign. Do not round the…
The Damon family owns a large grape vineyard in western New York along Lake Erie. The grapevines must be sprayed at the beginning of the growing season to protect against various insects and diseases. Two new insecticides have just been marketed: Pernod 5 and Action. To test their effectiveness, three long rows were selected and sprayed with Pernod 5, and three others were sprayed with Action. When the grapes ripened, 390 of the vines treated with Pernod 5 were checked for infestation. Likewise, a sample of 420 vines sprayed with Action were checked. The results are:
Insecticide
Number of VinesChecked (sample size)
Number ofInfested Vines
Pernod 5
390
23
Action
420
46
At the 0.02 significance level, can we conclude that there is a difference in the proportion of vines infested using Pernod 5 as opposed to Action? Hint: For the calculations, assume the Pernod 5 as the first sample.
State the decision rule. (Negative values should be indicated by a minus sign. Do…
The Damon family owns a large grape vineyard in western New York along Lake Erie. The grapevines must be sprayed at the
beginning of the growing season to protect against various insects and diseases. Two new insecticides have just been marketed:
Pernod 5 and Action. To test their effectiveness, three long rows were selected and sprayed with Pernod 5, and three others were
sprayed with Action. When the grapes ripened, 400 of the vines treated with Pernod 5 were checked for infestation. Likewise, a
sample of 400 vines sprayed with Action were checked. The results are:
Insecticide
Pernod 5
Action
Number of Vines Checked (sample
size)
400
400
At the 0.05 significance level, can we conclude that there is a difference in the proportion of vines infested using Pernod 5 as opposed
to Action? Hint For the calculations, assume the Pernod 5 as the first sample.
HO is rejected if z
Chapter 15 Solutions
STAT TECH IN BUSINESS & ECON LL\AC
Ch. 15 - A recent insurance industry report indicated that...Ch. 15 - The following hypotheses are given. H0:.70H1:.70 A...Ch. 15 - The following hypotheses are given. H0:=.40H1:.40...Ch. 15 - Prob. 3ECh. 15 - Prob. 4ECh. 15 - Prob. 5ECh. 15 - Prob. 6ECh. 15 - Prob. 2SRCh. 15 - Prob. 7ECh. 15 - The null and alternate hypotheses are: H0:1=2H1:12...
Ch. 15 - Prob. 9ECh. 15 - GfK Research North America conducted identical...Ch. 15 - Prob. 11ECh. 15 - Prob. 12ECh. 15 - Prob. 3SRCh. 15 - Prob. 13ECh. 15 - Prob. 14ECh. 15 - Prob. 15ECh. 15 - Prob. 16ECh. 15 - Prob. 17ECh. 15 - Classic Golf Inc. manages five courses in the...Ch. 15 - Prob. 19ECh. 15 - Prob. 20ECh. 15 - Prob. 4SRCh. 15 - Prob. 21ECh. 15 - Prob. 22ECh. 15 - Prob. 23ECh. 15 - Prob. 24ECh. 15 - Prob. 25ECh. 15 - Advertising expenses are a significant component...Ch. 15 - Prob. 5SRCh. 15 - Prob. 27ECh. 15 - Prob. 28ECh. 15 - Prob. 29ECh. 15 - Prob. 30ECh. 15 - Prob. 31CECh. 15 - Prob. 32CECh. 15 - Prob. 33CECh. 15 - Prob. 34CECh. 15 - Prob. 35CECh. 15 - Research in the gaming industry showed that 10% of...Ch. 15 - Prob. 37CECh. 15 - Prob. 38CECh. 15 - Prob. 39CECh. 15 - Prob. 40CECh. 15 - Prob. 41CECh. 15 - Prob. 42CECh. 15 - The Consumer Confidence Survey is a monthly review...Ch. 15 - Prob. 44CECh. 15 - Prob. 45CECh. 15 - Prob. 46CECh. 15 - Vehicles heading west on Front Street may turn...Ch. 15 - Prob. 48CECh. 15 - Prob. 49CECh. 15 - Prob. 50CECh. 15 - Prob. 51CECh. 15 - Prob. 52CECh. 15 - Prob. 53CECh. 15 - Prob. 54CECh. 15 - Prob. 55CECh. 15 - Prob. 56CECh. 15 - Prob. 57CECh. 15 - Prob. 58CECh. 15 - Prob. 59CECh. 15 - Prob. 60CECh. 15 - Did you ever purchase a bag of MMs candies and...Ch. 15 - Prob. 62DACh. 15 - Prob. 63DACh. 15 - Prob. 64DA
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- The Damon family owns a large grape vineyard in western New York along Lake Erie. The grapevines must be sprayed at the beginning of the growing season to protect against various insects and diseases. Two new insecticides have just been marketed: Pernod 5 and Action. To test their effectiveness, three long rows were selected and sprayed with Pernod 5, and three others were sprayed with Action. When the grapes ripened, 400 of the vines treated with Pernod 5 were checked for infestation. Likewise, a sample of 380 vines sprayed with Action were checked. The results are: Number of Vines Checked (sample Insecticide Pernod 5 Action size) 400 380 Number of Infested Vines 28 36 At the 0.05 significance level, can we conclude that there is a difference in the proportion of vines infested using Pernod 5 as opposed to Action? Hint. For the calculations, assume the Pernod 5 as the first sample. a. State the decision rule. (Negative amounts should be indicated by a minus sign. Do not round the…arrow_forwardThe Damon family owns a large grape vineyard in western New York along Lake Erie. The grapevines must be sprayed at the beginning of the growing season to protect against various Insects and diseases. Two new Insecticides have just been marketed: Pernod 5 and Action. To test their effectiveness, three long rows were selected and sprayed with Pernod 5, and three others were sprayed with Action. When the grapes ripened, 400 of the vines treated with Pernod 5 were checked for Infestation. Likewise, a sample of 400 vines sprayed with Action were checked. The results are: Number of Vines Checked (sample Insecticide Pernod 5 Action size) 400 400 Number of Infested Vines 24 40 At the 0.05 significance level, can we conclude that there is a difference in the proportion of vines Infested using Pernod 5 as opposed to Action? Hint. For the calculations, assume the Pernod 5 as the first sample. a. State the decision rule. (Negative amounts should be indicated by a minus sign. Do not round the…arrow_forwardSome commercial airlines recirculate about half the air in the cabin during flights as a way to improve fuel efficiency. Other airlines make a policy of NOT recirculating the air and instead, have fresh air from the atmosphere constantly being inserted into the cabin with the “old” air being pumped out of the plane. A total of 1100 passengers flying from San Francisco to Denver were used for an experiment. After their flight, they were each given a list of symptoms associated with the common cold. They were asked to report if they experienced cold symptoms within 24 hours of the flight landing. Of the 517 passengers who flew on planes that recirculate the air, 108 reported post-flight cold symptoms. Of the 583 passengers who flew on airlines that do not use recirculation in the cabin, 110 reported symptoms. Suppose now that we want to use the recirculation of air data to explore “Goal #2”, which is to resolve a hypothesis test about . a) If we want to resolve this hypothesis…arrow_forward
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