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For the following questions, assume a normal distribution with a Mean (X-bar) of 30, and a standard deviation of 5. Convert each of the following z-scores to a raw score on this distribution: 0.5=
The graph to the right depicts IQ scores of? adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15.
Find the mean for the random variable X, the number of students who work full time in sample of size 16. Please round your answer to two decimal places.
Provide an example of another personal variable that might be directly related to y along with an example of a personal variable that you think would tend to be inversely related to y.
Discuss what is meant by mean, median, mode, variance, and standard deviation for a set of scores. Also mention under what circumstance you would use each of these.
your company produces two products model alpha and model beta. these products have profits or contributions of 120 and
money accumulates in a fund at an effective annual interest rate of i during the first 5 years and at an effective
Determine and plot the probability mass function and probability distribution function of the contract award amount (in millions of dollars).
Find the approximate probability that at least 70?% of 100 randomly sampled people taking the bar exam will pass.
For many school systems, an IQ of 70 indicates that the child may be eligible for special education. What proportion of the general population has an IQ of 70 or less?
One of the authors claimed that his pulse rate was lower than the mean pul se rate of statistics students. The author's pulse rate was measured
question in 2000 27.7 of incoming freshmen characterized their political views as liberal 51.9 as moderate and 20.4 as
How many adults must be randomly selected to estimate the mean driving time of Chicago commuters? We want 99% confidence that the sample mean is within 4 minutes of the population mean, and the population standard deviation is known to be 8 minute..
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