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The expected number of days to completion for a different project is 3.85 days, E(x) = 3.85, with a variance of 1.35, var(x) = 1.35. The project cost is made up of a fixed cost of $50,000, plus $8,500 for each day taken
Assume the population variances of the two groups are equal and verify that the estimate of this common variance is 11.25.
find the z-score corresponding to a score of x23 for each of the following distributions. show the formulas used and
question a random sample of song playing times in seconds is as follows 242 231 220 213 230 293q1. find the standard
Steve then conducts a one-sample t-test on the data, knowing that there is an established mean for the publication of others that have taken this test of 6.
In a two-way layout with one observation in each cell, construct a test of the null hypothesis that all the effects of both factor A and factor B arc O.
Evaluate these probabilities under the assumption that 960 = 0.025 and q65 = 0.040.
An airline wishes to estimate the weight of the paint on a fully painted aircraft of the type it flies. In a sample of four repaintings the average weight.
a cola-dispensing machine is set to dispense a mean of 2.026 liters into a container labeled 2 liters. actual
Predict the final grade for a student who studies statistics 8 hours per week (x1), attends 34 classes (x2), and turns in 11 assignments (x3).
assume that womens heights are normally distributed with a mean of 63.4 in and a standard deviation of 1.7 in.a. if 1
byers and williams 1987 studied the impact of temperature the independent variable on the viscosity the response of
Unnithan, Houser, and Fernhall (2006) were interested in whether playing the game Dance Dance Revolution (DDR) affected the heart rate of overweight and nonoverweight adolescents differently. A group of 22 adolescents, 10 classified as overwei..
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