Question
Pertains to Quesions (1 - 6): A produce distributor claims that only 10% of its apples bruise during shipping. A high-end food retailer has recently
Pertains to Quesions (1 - 6):
A produce distributor claims that only 10% of its apples bruise during shipping. A high-end food retailer has recently had a lot of complaints about the condition of their apples. The retailer decided to perform a hypothesis test in order to determine whether the true proportion of bruised apples is greater than 10%. A random sample of 300 apples were collected and 42 of them were bruised. Perform the appropriate hypothesis test with a 0.05 significance level.
Question 1 (1 poin
Determine the appropriate null and alternative hypotheses.
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Question 2 (1 point)
Determine the critical value(s) for the test.
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Question 3 (1 point)
Determine the test statistic.
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Question 4 (1 point)
What is the conclusion of your test?
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Question 5 (1 point)
Determine the p-value.
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Question 6 (1 point)
Interpret the conclusion to your hypothesis test.
Question 6 options:
Answer on paper. |
Pertains to Quesions (7 - 13):
Syringe-exchange programs represent one attempt to slow the spread of HIV infection among intravenous drug users. A study in The New England Journal of Medicine found that 68% of a random sample of syringes that were not distributed by the exchange were HIV-positive. After the syringe-exchange program was underway, a random sample found that 164 out of 338 needles were HIV-positive. Test the hypothesis, with a 0.005 significance level, that the proportion of HIV-infected needles has decreased after the exchange program was in operation.
Question 7 (1 point)
Determine the appropriate null and alternative hypotheses.
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Question 8 (1 point)
Determine the critical value(s) for the test.
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Question 9 (1 point)
Determine the test statistic.
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Question 10 (1 point)
What is the conclusion of your test?
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Question 11 (1 point
Determine the p-value.
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Question 12 (1 point)
Interpret the conclusion to your hypothesis test.
Question 12 options:
Answer on paper. |
Question 13 (1 point)
Interpret the meaning of your p-value.
Question 13 options:
Answer on paper. |
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Pertains to Quesions (14 - 20):
A certain country claims that only 23% of its children are malnourished. An anthropologist who just visited the area felt that this claim was way too low. In order to perform a hypothesis test at a 0.01 significance level, he observed 120 children and found 33 to be malnourished.
Question 14 (1 point)
Determine the appropriate null and alternative hypotheses.
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Question 15 (1 point)
Determine the test statistic.
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Question 16 (1 point)
What is the conclusion of your test?
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Question 17 (1 point
Determine the p-value.
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Question 18 (1 point)
Interpret the conclusion to your hypothesis test.
Question 18 options:
Answer on paper. |
Question 19 (1 point)
If an error was made, what type of error would it be?
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Question 20 (1 poin
Interpret a Type II error (error){"version":"1.1","math":""}in the context of this problem.
Question 20 options:
Aswer on paper. |
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