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Calculate the skewness for your data set using Pearson's
Skewness Formula:
Skewness = 3 * (Mean - Median) / SD
And also determine all three (3) quartiles.
Test the Empirical Rule on your data set by finding the answers to the following questions:
(A) What percentage of YOUR data values lies within one (1) SD-unit of the sample mean? Calculate the skewness for your data set using Pearson's Skewness Formula: skewness = 3 * (Mean - Median) / SD and also determine all three (3) quartiles. Test the Empirical Rule on your data set by finding the answers to the following questions:
(B) What percentage of YOUR data values lies within one (1) SD-unit of the sample mean?
(C) What percentage of YOUR data values lies within two (2) SD-units of the sample mean?
(D) What percentage of YOUR data values lies within three (3) SD-units of the sample mean? What percentage of YOUR data values lies within two (2) SD-units of the sample mean?
(E) What percentage of YOUR data values lies within three (3) SD-units of the sample mean?
The registrar of a college with a population of N=4,000 full-time students is asked by the president to conduct a survey to measure satisfaction with the quality of life on campus.
What are the null and alternative hypotheses in this situation?
Compute the two groups using Paired sample t-test. Compute which modification reduced the number of traffic accidents
Researcher is interested in testing whether there are differences in mean between population one and population two.
Draw two pie charts, which allow the total yearly exports to be compared. Explain the trend in the export of fish as shown in the two pie charts.
Which is the probability that the median of the sample is between $17 and $20?
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
A random sample of students is selected, and each one is asked to try first brand A and then brand B, or vice versa with the order determined at random.
Based on this sample information, develop a 90 percent confidence interval for the population mean yearly premium.
Construct a 95 percent confidence interval for the true mean.
What is the probability that more than one machine is in the system? Probability that more than two are broken and waiting to be repaired or being serviced? More than three? More than four?
Determine the range and standard deviation of the times.
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