CHM372H5 Lecture Notes - Lecture 1: Red Wine, Litre, Standard Deviation
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Homework section 10. 2: the level of cholesterol in the blood for all men aged 20 to 34 follows a normal distribution with mean 188 milligrams per deciliter and standard deviation 41 mg/dl. For 14-year-old boys, blood cholesterol levels follow a normal distribution with mean. 25 men and 36 boys and calculate the sample mean cholesterol levels. Xb: what is the shape of the sampling distribution of, find the mean of the sampling distribution, find the standard deviation of the sampling distribution. Why: observational studies suggest that moderate use of alcohol by adults reduces heart attacks and that red wine may have special benefits. One reason may be that red wine contains polyphenols, substances that do good things to cholesterol in the blood and so may reduce the risk of heart attacks. In an experiment, healthy men were assigned at random to drink half a bottle of either red or white wine each day for two weeks.