What test should you use to answer these questions? Assume all samples are simple random samples and ? (alpha) is taken to be 0.05.
In a certain city, there are about 250,000 eligible voters. A sample of male voters and a sample of female voters were taken to study the relationship between sex and participation in the last election. The results:
Men that voted 850
Women that voted 1024
Men that didn’t vote 750
Women that didn’t vote 976
Is participation in the election the same for males and females?
Question options:
| 1) | One sample z-test for the population mean. |
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| 2)One sample z-test for proportions. |
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| 4) | two sample z-test for proportions. |
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| 5) | one sample t-test for the population mean. |
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Question 4 |
A random sample of size 21 was taken from a normal population. The sample average was 9.87 and the sample SD was 1.17. What test should you use for testing whether the population mean equals 9.7?
Question options:
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| 1) | One sample z-test for proportions. |
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| 2) | two sample z-test for proportions. |
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| 3) | one sample t-test for the population mean. |
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| 4) | None of our hypothesis tests fit. |
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Question 5 |
A new drug has been developed for a group of people and the researchers are worried that it might have an effect on pulse rate. This particular group of people has a known mean pulse rate of 82 bpm (beats per minute). A sample of 36 people taking this experimental drug is taken from the population. The mean pulse rate of the sample is 84 bpm with a standard deviation of 5 bpm. Is there evidence that the drug is changing pulse rate?
Question options:
| 1) | One sample z-test for the population mean. |
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| 2) | two sample z-test for the population means. |
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| 3) | One sample z-test for proportions. |
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| 4) | two sample z-test for proportions. |
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| 5) | None of our hypothesis tests fit. |
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Solution: STATISTICS 101-In a certain city, there are about 250,000 eligible voters