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You are considering buying a new house in a new city. You want to know the average price of the houses in a new community to which you are considering moving. Do you want to know the mean, median or mode price for the price of homes in that community? Why?
For a candidate to win in a congressional district, he has to have won over half of the vote. The Republican candidate takes a poll to assess his chances in a two-candidate race.
This problem has to do with graphical plotting and computation for certain distribution. Please mention a detailed response to the questions listed with appropriate graphical and statistical data representation(s).
If you want to be 95% confident of estimating the population proportion to within a sample error of +and - .05 and there is historical evidence that the population is approximately .35, what sample size is needed.
By using a level of significance of .10, is there evidence that the population mean weight of the candy bars is greater than 4.3?
What are the implications of statistical variation? Why are we interested in understanding and measuring variation?
Calculate s(k) for each natural number k from 1 through 15. Are the numbers SQRT(5), PI, and -6 in the domain of the function s? What is the domain of the function s?
Sketch the appropriate distribution, and locate the critical region for a = 0.05.
If they would like to estimate the true average time to within 1.9 minute (with 95% confidence) what sample size should they use? (remember to round to the next largest integer.)
The purchase price is $25 per tire if fewer than 200 tires are ordered, $16 per tire if 200 or more, but fewer than 8,000, tires are ordered, and $25 per tire if 8,000 or more tires are ordered.
If historical time series data is very limited, what type of forecasting approach would be useful.
Every year sixth-grade students in Ohio schools take proficiency tests.
Assuming for a moment that 35% of all Ralph's customers have a discount card, what is the probability of getting a sample proportion at least this big?
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