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In a certain parking lot, 45% of the cars have four doors, 16% of the cars are blue, and 4% of the cars have four doors and are blue. What is the probability that a car chosen at random will have either four doors or a blue color, but not both?
Briefly explain how sample size affect outcome of hypothesis test. How does sample size affect measures of effect size?
suppose cholesterol levels of adult women have a mean of 188.9 and sd of 20.9. what is the probability that a randomly
pretests posttests and threats to internal validity.answer the question either by writing the design name or by
high school seniors with strong academic records apply to the nations most selective colleges in greater numbers each
The fill amount of bottle of soft drink has been found normally distribute with a mean of 2.0 liters and a standard deviation of 0.05 liters. If a random sample of bottles is selected, what is the probability that the sample mean will be between 1..
Assume the wages are normally distributed with a standard deviation of $0.45. If a worker at this car wash is selected at random, what is the probability that the worker earns more than $6.75?
A researcher is interested in estimating noise levels in decibels at area urban hospitals. She wants to be 90% confident that her estimate is correct. If the standard deviation is 4.13, how large a sample is required to get the desired information..
The number of T.V. homes in the sample having cable T.V. What is the probability that at least 2 T.V. homes in the sample are served by cable?
Suppose we analyzed the effect of grade point averages on grades in a specific class and found the results to have an R-aquared value of 0.53. What do we know? Are there other factor, neith or fifty three percent of the variability?
By using the normal probability distribution, what is the probability the car will be repaired in 35 minutes or less?
researchers are testing the effectiveness of a new smoking cessation program. at the close of the program the mean
Make a forecast for 2005, using a trend model of your choice or a judgment forecast. Discuss. Note: Time increments are 5 years, so use t = 6 for your 2005 forecast.
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