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What are the different types of non-probability sampling? What are the different types of probability sampling? How would you describe their difference?
The length of the snake Vipera bertis (X), measured in centimeters, is assumed to be normally distrubuited with mean 63 and variance 22. The weight (Y) is measured on grams, can be calculated by using Y= -300 + 7x.
A manufacturer of electronics kits has found
Find the expected value
Each of the following proportions is based on survey responses. For each proportion, use the ±2 rule of thumb to determine the 95 percent confidence interval. When asked if they are satisfied with their financial situation, .29 said "very satisfied" ..
A cell phone company offers two plans to its subscribers. At the time new subscribers sign up, they are asked to provide some demographic information. The mean yearly income for a sample of 40 subscribers to Plan A is $59,100 with a standard d..
How do small companies compare to the major competitor and Has satisfaction with the manufacturer changed since the change in company ownership?
State the null hypothesis for the non-oil-dependent/oil-dependent comparison. Calculate the difference between the means of the democracy scale for non-oil-dependent and oil-dependent countries, Calculate the standard error of the difference. Calcula..
Beanie Babies are toy stuffed animals that have become valuable collector's items. Beanie World Magazine provided the information on 50 Beanie Babies given in beanie.xls.
The normal distribution is a type of probability density function. Areas found under this curve are equivalent to probabilities. For example, the probability that z lies between a and b is denoted P(a
How would you describe the function of a generalized linear regression model?
What conclu-sions can you reach concerning calories, protein, andcholesterol?3
Based on interviews with 81 SARS patients, researchers found that the mean incubation period was5 days, with a standard deviation of 15.7 days. Based on this information construct a 95% confidence interval for the mean incubation period of SA..
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