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1. A hypothesis test is done in which the alternative hypothesis is that more than 10% of the population is left-handed. The calculated p-value for the test is 0.25. Which statement is correct? A. We can conclude that exactly 25% of the population is left-handed. B. We can conclude that more than 10% of the population is left-handed. C. We can conclude that more than 25% of the population is left-handed. D. We cannot conclude that more than 10% of the population is left-handed. 2. In a nationwide survey, 1,500 adults were asked about attitudes toward "alternative medicine"

1. A hypothesis test is done in which the alternative hypothesis is that more than 10% of the population is left-handed. The calculated p-value for the test is 0.25. Which statement is correct? A. We can conclude that exactly 25% of the population is left-handed. B. We can conclude that more than 10% of the population is left-handed. C. We can conclude that more than 25% of the population is left-handed. D. We cannot conclude that more than 10% of the population is left-handed. 2. In a nationwide survey, 1,500 adults were asked about attitudes toward "alternative medicine"

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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1. A hypothesis test is done in which the alternative hypothesis is that more than 10% of the population is left-handed. The calculated p-value for the test is 0.25. Which statement is correct? A. We can conclude that exactly 25% of the population is left-handed. B. We can conclude that more than 10% of the population is left-handed. C. We can conclude that more than 25% of the population is left-handed. D. We cannot conclude that more than 10% of the population is left-handed. 2. In a nationwide survey, 1,500 adults were asked about attitudes toward "alternative medicine" such as acupuncture, massage therapy, etc. Among the 1,500 respondents, 660 said they would use alternative medicine if the traditional medicine did not produce the results they wanted. The researcher wants to determine if these data provide enough evidence to suggest that less than half of all adults would use alternative medicine if traditional medicine didn't produce the desired results. The level of significance used was 5%. Which is the correct conclusion for this test? A. Since p-value = 0.001 <0.05, I reject Ho. There is enough evidence to suggest that the proportion is less than half. B. Since p-value = 0.001 <0.05, I fail to reject Ho. There is not enough evidence to suggest that the proportion is less than half. C. Since p-value = 0.001 > 0.05, I reject Ho. There is enough evidence to suggest that the proportion is less than half. D. Since p-value = 0.001 <0.05, I fail to reject Ho. There is enough evidence to suggest that the proportion is less than half. 3. A potato chip producer and a supplier of potatoes agree that each shipment must meet certain quality standards. If the producer is convinced that more than 8% of the potatoes in the shipment have blemishes, the truck will be sent away and another one would have to be sent. In a recent shipment, an SRS of 80 potatoes was selected and 7 had blemishes. Use a = 0.01. Which is the correct decision for this test? A. Since p-value = 0.4024 > .01, I reject Ho. B. Since p-value = 0.4024 > .01, I reject Ho. C. Since p-value = 0.4024<.01, I fail to reject Ho. D. Since p-value = 0.4024 > .01, I fail to reject Ho. 4. In problem no. 3, what will be the correct conclusion regarding the claim? A. There is no sufficient evidence that more than 8% of the potatoes in the shipment have blemishes. Therefore, the truck should be returned. B. There is sufficient evidence that more than 8% of the potatoes in the shipment have blemishes. Therefore, the truck should be returned. C. There is no sufficient evidence that more than 8% of the potatoes in the shipment have blemishes. Therefore, the truck should not be returned. D. There is sufficient evidence that more than 8% of the potatoes in the shipment have blemishes. Therefore, the truck should not be returned. 5. When the confidence level is 99%, the level of significance is_ A. 0.01 B. 0.05 C. 0.10 D. 0.50 6 Which is the alternative hypothesis for the followin
Transcribed Image Text:1. A hypothesis test is done in which the alternative hypothesis is that more than 10% of the population is left-handed. The calculated p-value for the test is 0.25. Which statement is correct? A. We can conclude that exactly 25% of the population is left-handed. B. We can conclude that more than 10% of the population is left-handed. C. We can conclude that more than 25% of the population is left-handed. D. We cannot conclude that more than 10% of the population is left-handed. 2. In a nationwide survey, 1,500 adults were asked about attitudes toward "alternative medicine" such as acupuncture, massage therapy, etc. Among the 1,500 respondents, 660 said they would use alternative medicine if the traditional medicine did not produce the results they wanted. The researcher wants to determine if these data provide enough evidence to suggest that less than half of all adults would use alternative medicine if traditional medicine didn't produce the desired results. The level of significance used was 5%. Which is the correct conclusion for this test? A. Since p-value = 0.001 <0.05, I reject Ho. There is enough evidence to suggest that the proportion is less than half. B. Since p-value = 0.001 <0.05, I fail to reject Ho. There is not enough evidence to suggest that the proportion is less than half. C. Since p-value = 0.001 > 0.05, I reject Ho. There is enough evidence to suggest that the proportion is less than half. D. Since p-value = 0.001 <0.05, I fail to reject Ho. There is enough evidence to suggest that the proportion is less than half. 3. A potato chip producer and a supplier of potatoes agree that each shipment must meet certain quality standards. If the producer is convinced that more than 8% of the potatoes in the shipment have blemishes, the truck will be sent away and another one would have to be sent. In a recent shipment, an SRS of 80 potatoes was selected and 7 had blemishes. Use a = 0.01. Which is the correct decision for this test? A. Since p-value = 0.4024 > .01, I reject Ho. B. Since p-value = 0.4024 > .01, I reject Ho. C. Since p-value = 0.4024<.01, I fail to reject Ho. D. Since p-value = 0.4024 > .01, I fail to reject Ho. 4. In problem no. 3, what will be the correct conclusion regarding the claim? A. There is no sufficient evidence that more than 8% of the potatoes in the shipment have blemishes. Therefore, the truck should be returned. B. There is sufficient evidence that more than 8% of the potatoes in the shipment have blemishes. Therefore, the truck should be returned. C. There is no sufficient evidence that more than 8% of the potatoes in the shipment have blemishes. Therefore, the truck should not be returned. D. There is sufficient evidence that more than 8% of the potatoes in the shipment have blemishes. Therefore, the truck should not be returned. 5. When the confidence level is 99%, the level of significance is_ A. 0.01 B. 0.05 C. 0.10 D. 0.50 6 Which is the alternative hypothesis for the followin
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