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There are 6 different colored kittens at the pet store (brown, white, black, calico, orange, and gray). If Annie's family wants to take 2 of them home, how many different combinations of kittens can her family choose from?
Does lovastatin (a cholesterol-lowering drug) reduce the risk of heart attack? In a Texas study,researchers gave lovastatin to 2,325 people and an inactive substitute to 2,081 people
a population has a mean of mu 30 and a dtadard deviation of 5. if 5 points were added to every score in the population
question 1the subsequent set of data is the mark for 30 students in a final exam.a use spss commands analyze -gt
The weekly demand for a product follows a normal curve with an average of 1000 units and a standard deviation of 200 units. In how many weeks during a typical 52-week year would be above 800 units?
If the claim says that the population mean is greater than 200 and the sample mean is 215, we can say that the claim is true even without a formal test.
How large a sample must one take to be 90% confident that the estimate is within 0.05 of the true proportion of women over 55 who are widows?
The population standard deviation is known to be 8 minutes. create a hypothesis test to determine if the mean commute time does in fact exceed 40 minutes.
Determine the probability distribution associated with these data.
Assume that preparation D was a placebo. Use the Scheffe's procedure to compare the average response of A, B, C, and E to the response for D.
Does thus data support the researchers' hypothesis? Test the relevant hypothesis using a = .1 by first calculating a p-value.
In government data, a household consists of all occupants of a dwelling unit, while a family consists of two or more persons who live together and are related by blood or marriage. So all families form households, but some households are not famil..
Based on these results, a confidence interval for the population mean is found to be μ = 5.7 ± 4.4. Find the degree of confidence.
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