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A tire company test a particular model of tire and found the tires to be normally distributed with respect to wear. The mean was 28,000 miles and the standard deviation was 2500 miles. If 2000 tires are tested, about how many are likely to wear out before 23,000 miles.
Describe expected value (EV) of an investment if there is a 20% chance of realizing a return of $20,000 or a 55% chance of realizing a return of $25,000, or there could be a loss of $15,000?
LSAT scores are normally distributed, with a mean of 150 and s = 10.
The data below are the numbers of hours of homework done as reported by 24 high school juniors for the last week in September 2006.
Find the probability that fewer than 10 of those sampled currently have access to online services.
Describe the independent variable and the dependent variables?
The analysis needs to be re-run adding the error into the regression sum of squares.
A researcher has reason to believe that, for an experiment with 50 points, a 95% prediction interval would be of width 4. If the researcher wishes to run a more precise experiment that will result in a 95% prediction interval of width 2, then the ..
What is the distribution of sample means.
Explain the logic of what you have done to a person who is unfamiliar with the analysis of variance.
Probability depends on normal distribution. If a random sample of nine 18 year old men is selected illustrate what is the probability that the mean height
Compute the effect size for each of the following average SAT math scores. Remember SAT math is standardized such that u= 500 and standard deviation =100.
Suppose a restaurant business succeeds 60% of the time. Suppose that there are three such restaurants open in your city. When they don't compete with one another, it is reasonable to believe that their relative success would be independent.
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