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An insurance company estimates 45 percent of its claims have errors. The insurance company wants to estimate with 95 percent confidence the proportion of claims with errors. What sample size is needed if they wish to be within 4 percentage points of the actual?
Compute the p-value; and at 95% confidence, test the hypothesis. Assume the population is normally distributed. Compute the test statistic.
an educator claims that the drop out rate for seniors at high school in ohio is 15. last year 38 seniors from a random
woof chow dog food company believes that it has a market share of 25 percent. it surveys n 100 dog owners and ask
Find the 95 percent confidence interval for the mean score on each exam. Do the confidence intervals overlap? If so, what does this suggest?
Determine the percent of the days is the price between $38.00 and $40.00?
use two sums from part A and the computational formal to compute sum of square (SS)for the scores.
Forecast 2 out of sample forecasts for the final model using following data: Final Estimates of Parameters AR 1 0.9647 0.0388 24.84 0.000.
Find out the least-squares regression line and interpret its slope.
The paired data below consist of the test scores of 6 randomly selected students and the number of hours they studied for the test.
question assume the branch manager requested estimates of the mean selling price of gulf view condominiums with a
the generation of children raised in the 1990s and 2000s has been dubbed generation m because of the impact of media on
A sample of ten ER patients was conducted to determine their average wait time and to compare this to the target wait time. The hospital wants to make sure that patients do not wait more than 35 minutes. Test following hypotheses using a 95% con..
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