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Using Chebysheff's theorm, you have concluded that at least 77.42% of the 2,403 runners took between 59.7 and 77.9 minutes to complete the 10km race. What was the standard deviation of these 2,403 runners?
1. Calculate the area under the curve (to the 4th decimal) for the following examples:
You are interested in looking beyond a single group and attempt to determine the implication of a group performance on a population of interest.
A die is made of a cube with a square painted on one side, a circle on two sides, and a triangle on three sides.
The experimental medication of the placebo. Generate a 95% confidence interval for the difference in proportions of patients with hypertension between groups.
The random variable is transformed by the device whose input-output relationship is shown.- Find and sketch the PDF of the transformed random variable, Y.
What two assumptions must be met when you are using the z test to test differences between two means? Can the sample standard deviations s1 and s2 be used in place of the population standard deviations σ1 and σ2?
In a recent USA Today poll, most customers shopping online indicated that shipping options are important when making buying
Since the injury to Derrick Rose, at least six NBA players have experienced similar injuries-torn ACLs. State two possible explanations for this rare rash of injuries. Which explanation do you think is more plausible? Why?
The following are data on the percent effectiveness of a pain reliever and the amounts of three different medications (in milligrams) present in each capsule:
Given the sample results shown below, use the 0.05 level of significance in determining whether the new filtration system could be superior.
In problem, give a 95% confidence interval for the increase in the population proportion of consumers preferring California wines following the campaign.
I need to find the joint and marginal distribtions for this problem. Since they are independent I know that f(x,y) = fx(x) * fy(y) but do not understand how to take that and the data given in the problem to find the marginal and joint distribtion
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