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In a case/control study of patients with gallstones, information on coffee consumption was obtained.
Among the 80 controls, 35 reported drinking at least 4 cups of coffee per day, whereas 22 of the 82 cases drank 4 or more cups. Test whether cases and controls drink the same amount of coffee.
For such groups of 800, would it be unusual to get 687 consumers who recognize the Dull Computer Company name?
Provide an estimate, standard error, an 80 percent con?dence interval, and a 95 percent con?dence interval for θ.
Coke cans: n=36, mean of values in sample = 12.19 oz., s= 0.11 oz. Test the claim that the mean equals 12 oz. Use a significance level of alpha = 0.02.
What is the probability that the sample mean would differ from the true mean by greater than .04 dollars if a sample of 183 5 gallon pails is randomly selected? Round answer to 4 decimal places.
1.a simple random sample of 1000 americans found that 61 were satisfied with the service provided by the dealer from
Use MINITAB or some other computer software to construct a stem-and-leaf display for the following data representing the time to make coke (in hours) in successive runs of a coking oven.
Why then does it matter whether we assume straight-line or MACRS depreciation when we assess project NPV?
The time to complete a construction project is normally distributed with a mean of 60 weeks and a standard deviation of 4 weeks. What is the probability the project will take longer than 65 weeks?
Find the Celsius temperature(to the nearest degree when Fahrenheit temperature is 9 degrees by solving the equation 59= 9/5 C +32, where F is the Fahrenheit temperature (in degrees and C is the Celsius temperature.
in a certain community 20 of the families own a dog and 20 of the families that own a dog also own a cat. it is also
let w be x212a determine the mean and the variance of wb find d1d2d3 and d4 so that pw gt d1 0.05 p w gt d2 0.99 pw
Standard error for regression equation - determination and non determination and explain the meaning of each.
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