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Water bill mean $78.03 assume other bills normally distributed with standard deviation $13.33 what is the value that separates the lower 72% of bills from the rest?
A real estate agent in the coastal area of Georgia wants to compare the variation in the selling price of homes on the oceanfront with those one to three blocks from the ocean.
the weight of an ice-cream shops sundae special is known to be normally distributed with a mean of 0.5 pounds and a
Describe a method for obtaining a simple random sample of mile-long road segments.- Is this an observational or experimental study?
What is the probability that a simple random sample of 40 male graduates will provide a sample mean within $10,000 of the population mean, $168,000 (to 4 decimals)?
Find an example of a poll based on a self-selected sample. Report the wording of the questions and the number who chose each response. Comment on whether or not you think the results can be extended to any population.
What is the difference between a histogram and a bar chart?- For what type of data would each be appropriate?
How much variability will you have if you predict sales with this model?
Five percent of the many cars produced at a plant are defective. Ten cars made at the plant are sent to a dealership. Let X be the number of defective cars.
Estimating the combined mean values for the given data - find the mean for the combined sample
According to the U.S. Department of Agriculture's World Livestock Situation, the country with the greatest per capita consumption of pork is Denmark.
The branch manager for the D. L. Evens Bank has been asked to prepare a presentation for next week's board meeting.
Suppose that we plan to use a statistical test at the two-sided 5% level of significance and the study is designed to have 80% power to detect the alternative hypothesis that the two-year survival rates in the paclitaxel and docetaxel arms are 40%..
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