Question
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
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 didnt vote 750 Women that didnt vote 976 Is participation in the election the same for males and females?
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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?
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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?
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