Mathematics, 05.12.2021 08:20 peytondavis2424
Blood nicotine levels in regular cigarette smokers have a mean of 100 mg but standard deviation is unknown. A smoking researcher investigates whether e-cigarettes have positive or negative effect on blood nicotine levels. He gave e-cigarettes to a random sample of 30 smokers and found a mean nicotine level of 140 mg with a standard deviation of 20 mg. Test the hypothesis that e-cigarettes had an effect. Please show all the steps involved in a hypothesis testing including proper statistical symbols, formula used, and report/interpret results in complete sentences.
Answers: 3
Mathematics, 21.06.2019 20:30
Answer asap ill give ! ’ a sample of radioactive material decays over time. the number of grams, y , of the material remaining x days after the sample is discovered is given by the equation y = 10(0.5)^x. what does the number 10 represents in the equation? a. the half-life of the radioactive material, in days b. the amount of the sample, in grams, that decays each day c. the time, in days, it will take for the samples to decay completely d. the size of the sample, in grams, at the time the material was discovered
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Mathematics, 22.06.2019 00:00
Which of the following will form the composite function?
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Choose the domain & range of the relation shown in the graph: domain: -1, 0, 1, 2, 3 range: -3, -1, 0, 3 domain: -3, -1, 0, 3 range: -3, -1, 0, 3 domain: -3, -1, 0, 3 range: -1, 0, 1, 2, 3 domain: 3, 1, 0, 3 range: -1, 0, 1, 2, 3
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Blood nicotine levels in regular cigarette smokers have a mean of 100 mg but standard deviation is u...
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