For each of the following situation, write the null hypothesis (?") and the alternative hypothesis (? ) in both sentence and symbolic form. A simple random sample of 50 recorded speeds (in km/h) is obtained from cars traveling on a section of a highway in Jamaica. The sample has a mean of 85.5 km/h with a standard deviation of 5 km/h. A researcher working with the Jamaica Constabulary Force (JCF) wants to test the claim that the mean speed of all cars is different from the posted speed limit of 80 km/h According to data from a tobacco institute testing laboratory, Matterhorn cigarettes contain on average at most 0.9 milligrams of nicotine. An advocacy group commission an independent test to see if the mean nicotine content is higher than the industry laboratory’s claims
For each of the following situation, write the null hypothesis (?") and the alternative hypothesis (? ) in both sentence and symbolic form.
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A simple random sample of 50 recorded speeds (in km/h) is obtained from cars traveling on a section of a highway in Jamaica. The sample has a mean of 85.5 km/h with a standard deviation of 5 km/h. A researcher working with the Jamaica Constabulary Force (JCF) wants to test the claim that the mean speed of all cars is different from the posted speed limit of 80 km/h
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According to data from a tobacco institute testing laboratory, Matterhorn cigarettes contain on average at most 0.9 milligrams of nicotine. An advocacy group commission an independent test to see if the mean nicotine content is higher than the industry laboratory’s claims
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