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Sixty percent of the employees in a certain department are female. One third of the females drive foreign cars. The rest drive domestic cars. Twenty-five percent of the males in the department drive foreign cars. One person is randomly selected from the departmental files. Use this information to construct a probability table, and then calculate each of the following probabilities: P(foreign car)
Research question: Are mean crash damages same for these 3 vehicles? Crash1 Crash Damage ($).
Assuming that these are a random sample of all publicly traded companies, construct a 95 % confidence interval for the overall noncompliance proportion.
Find out z values for 29 and 34 hours. What percent of garages take between 32 hours and 34 hours to erect?
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
If it is determined that there is no difference between the population mean being represented by the sample and the mean of the population at large, then:
The Kruskal-Wallis rank test is a nonparametric replacement - The Wilcoxon rank sum test tests a null hypothesis
A company makes camshafts. The camshaft lengths need to be within a certain tolerance or they will not fit. They have produced x bar and s charts
The firm examined 35 randomly chosen fax transmissions during the next year, yielding a sample mean of 14.44 with a standard deviation of 4.45 pages.
Compute lower and upper quartiles of log10-balances? Determine 95% range of the balances in $s? Express in English what the two boundaries mean.
Plot stem-and-leaf plot and boxplot for Mtotal. Illustrate hand calculation of median location and upper hinge location of boxplot, and determine their corresponding data values.
Show the graph of the probability density function for flight time.
Plot a scatter diagram of the results with Depth of Water as the independent variable.
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