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A researcher claims that the variation in the number of days that factory workers misses due to illness is greater than the variation in number of days missed by hospital workers. A sample of 42 hospital workers had a standard deviation of 2.1 days, while a sampe of 65 factory workers had a standard deviation of 3.2 days. At alpha = 0.05, is the researcher correct in his claim?
A roulette wheel has 38 slots, numbered 0, 00, and 1 to 36. The slots 0 and 00 are colored green, 18 of the others are red, and 18 are black.
probability based on a random experiment.1. the telephone numbers for a region of a state have an area code of 570. the
a regression of birth weight on the mothers estriol level is shown belowbirth weight g 2149 0.61estriol level. which
Conduct post hoc comparisons with the LSD method. Which groups differ significantly at α = 0.05?
The incarceration rate in one nation's prisons was 965 per 100,000 male residents, and 65 per 100,000 female residents.
the national center for health statistics reported that of every 883 deaths in recent years 24 resulted from an
Write down the differential equations which describe the probabilistic behavior of the unit in time as a Markov process.
Develop a regression model to fit the trend effects for the data. Use a linear model and then try a quadratic model and how well does either model fit the data?
The ANOVA procedure is a statistical approach for determining whether or not:
How would you respond if someone told you that the correlation between education level and salary was 1.27?
The number of phone calls coming into a switchboard in the next five minutes will either be 0, 1, or 2. The probabilities are the same for each of these (1/3).
Suppose you went to the Bureau of Labor Statistics web site and found several predictors of your salary. State three possible predictors and a simulated multilinear regression equation along with their p-values.
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