A physician compared the cholesterol levels of a representative sample of Americans who ate an American diet versus a representative sample of those who followed a Mediterranean diet. Below are the means, standard deviations, and sample sizes for both samples. Though in some studies a Mediterranean diet has been shown to be beneficial, this was one of the first studies on an American population and the physician had made no advance predictions about the outcome. American diet (control): M = 230, s = 24, n = 36. Mediterranean (experimental): M = 190, s = 26, n = 36. Use α = .05. 6. Calculate the test statistic 7. Estimate the magnitude of the effect size (Cohen’s d). 8. Calculate the 95% confidence interval for the differences between population means.
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
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Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
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- A physician compared the cholesterol levels of a representative sample of Americans who ate an American diet versus a representative sample of those who followed a Mediterranean diet. Below are the means, standard deviations, and
sample sizes for both samples. Though in some studies a Mediterranean diet has been shown to be beneficial, this was one of the first studies on an American population and the physician had made no advance predictions about the outcome. American diet (control): M = 230, s = 24, n = 36. Mediterranean (experimental): M = 190, s = 26, n = 36. Use α = .05.
6. Calculate the test statistic
7. Estimate the magnitude of the effect size (Cohen’s d).
8. Calculate the 95% confidence interval for the differences between population means.
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