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a) Use Chebyshev's theorem to find what percent of the values will fall between 120 and 150 for a data set with mean of 135 and standard deviation of 7.5.
b) Use the Empirical Rule to find what two values 95% of the data will fall between for a data set with mean 234 and standard deviation of 12.
Create a hypothesis and perform a series of tests to determine if there is any fundamental difference in the findings.
Based on surveys conducted in 1989 and 1999, a researcher compared the proportion of high school age females interested in a career in science in 1989 with the proportion in 1999. He concluded that the proportions were not significantly different ..
What is the probability of receiving more than three pieces of junk mail today?
If we want to increase our confidence level from 95% to 99%, what happens to our confidence interval?
The following frequency distribution was obtained. The data values are in hours. Construct a histogram for the data .
Determine the estimated population mean?
Determine the mean number of times the machine was used per day.
Assume that Los Arboles had a special program in place to encourage helmet use. Elucidate to what extent did removal of the outlier improve the fit.
For the data giben below, prepare a R-chart. Note that the sample size is three.
Karefree State University has an enrollment of 18,000. Researchers took a sample of 900 and found 477 students wanted a Field Hockey team. Construct the 95% and 99% Interval estimates for the population proportion.
Which of the following measures only the strength of a relationship?
A better case can be made that observation 13 (Los Arboles) is an outlier. Describe what this means in plain terms.
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