Question 1 (1 point)
The Kellogg Company periodically compares sales acrossdepartments. In one particular instance, they would like todetermine if sales of snacks are different from sales of frozenfoods. If snacks are group 1 and frozen foods are group 2, what arethe hypotheses for this test?
Question 1 options:
| 1) | HO: μ1 ≠μ2
HA: μ1 = μ2 |
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| 2) | HO: μ1 = μ2
HA: μ1 ≠μ2 |
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| 3) | HO: μ1 ≥ μ2
HA: μ1 < μ2 |
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| 4) | HO: μ1 > μ2
HA: μ1 ≤ μ2 |
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| 5) | HO: μ1 ≤ μ2
HA: μ1 > μ2 |
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Question 2 (1 point)
Do sit down restaurant franchises and fast food franchisesdiffer significantly in stock price? Specifically, is the averagestock price for sit-down restaurants different from the averagestock price for fast food restaurants? If sit down restaurants areconsidered group 1 and fast food restaurants are group 2, what arethe hypotheses of this scenario?
Question 2 options:
| 1) | HO: μ1 ≤ μ2
HA: μ1 > μ2 |
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| 2) | HO: μ1 > μ2
HA: μ1 ≤ μ2 |
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| 3) | HO: μ1 = μ2
HA: μ1 ≠μ2 |
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| 4) | HO: μ1 ≠μ2
HA: μ1 = μ2 |
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| 5) | HO: μ1 ≥ μ2
HA: μ1 < μ2 |
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Question 3 (1 point)
Does the amount of hazardous material absorbed by the bodies ofhazardous waste workers depend on gender? You want to test thehypotheses that the amount absorbed by men (group 1) is differentfrom the amount absorbed by women (group 2). A random sample of 195male workers and 199 female workers showed an average leadabsorption in the blood of 12.13 (SD = 1.281) and 11.84 (SD =0.821), respectively (measured in micrograms/deciliter). Assumingthat the population standard deviations are the same, perform a twoindependent samples t-test on the hypotheses Null Hypothesis:μ1 = μ2, Alternative Hypothesis:μ1 ≠μ2. What is the test statistic andp-value of this test?
Question 3 options:
| 1) | Test Statistic: -2.681, P-Value: 0.0077 |
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| 2) | Test Statistic: 2.681, P-Value: 0.9962 |
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| 3) | Test Statistic: 2.681, P-Value: 1.9962 |
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| 4) | Test Statistic: 2.681, P-Value: 0.0038 |
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| 5) | Test Statistic: 2.681, P-Value: 0.0077 |
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Question 4 (1 point)
The owner of a local golf course wants to examine the differencebetween the average ages of males and females that play on the golfcourse. Specifically, he wants to test if the average age of malesis greater than the average age of females. If the owner conducts ahypothesis test for two independent samples and calculates ap-value of 0.862, what is the appropriate conclusion? Label malesas group 1 and females as group 2.
Question 4 options:
| 1) | The average age of males is less than or equal to the averageage of females. |
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| 2) | We did not find enough evidence to say the average age of malesis less than the average age of females. |
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| 3) | We did not find enough evidence to say a significant differenceexists between the average age of males and females. |
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| 4) | The average age of males is significantly larger than theaverage age of females. |
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| 5) | We did not find enough evidence to say the average age of malesis larger than the average age of females. |
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