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A radio station must broadcast at exactly 103.1 MHz. In a random sample of 25 days they average 103.8 MHz. The SD at radio stations with similar equipment is .1 MHz. At level of significance a = .05, are they meeting FCC specifications?
Do a Z-test.
Suppose an airport scanning device has 98% accuracy in detecting certain kinds of metal objects (98% of people carrying these objects are correctly identified as carriers and 98% of people not carrying them are correctly identified as non-carriers..
Although there is a popular belief that herbal remedies such as ginkgo biloba and ginseng may improve learning and memory in healthy adults, these effects are usually not supported by well-controlled research.
if the analysis of variance f test leads to the conclusion that at least one of the model parameters is non-zero can
For the horseshoe crab data with width, color, and spine as predictors, suppose you start a backward elimination process with the most complex model possible. Denoted by C ∗ S ∗ W, it uses main effects for each term as well as the three two-factor..
At the .05 significance level, can we conclude that more than 60% of the homes have an attached garage? What is the p-value.
Use the ustudy.sav file. This time, consider that you collected data only on ACADRNK, YRSPHD, SALARY, and PUBLCTN from the 20 faculty. The purpose of your analysis is to group this faculty into separate clusters based on the data you have.
A study of the effects of 3 components A, B, and C on the etched grid line width in a photolithography process was carried out using a 23 factorial design with the following levels of each factor:
A financial planner wants to compare the yield of income and growth mutual funds. Fifty thousand dollars is invested in each of a sample of 35 income and 40 growth funds
the dean would like to get a summary of gender and final grade for this class. discuss the forms of numerical and
Determine estimated average starting salary for school with average GMAT of 600 points?
Choose two of the three original variables. Draw a scatterplot with the country group of each point indicated. Comment. Generate classification rules using Linear discriminant analysis.
Give H0 and HA for testing whether the average July 2006 price was $25,000. Calculate and interpret the p-value of the test. State the appropriate conclusion for the test if α = 5%
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