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A survey has revealed that 75% of all college students study. It is also known that 85% of all students who study will graduate, while only 35% of those students who do not study will graduate. A randomly selected student is observed to graduate. What is the probability that the student studied?
What is the 99% confidence interval, if the population standard deviation is known to be 10 days? What is the 99% confidence interval, if the sample standard deviation is 10 days?
Nationwide, the average time until a electric utility customer service representative answers a call is 260 second. The Gigantic Kilowatt Energy Company rnadomly sampled 30 calls and found that, on average, they were answered in 227 second with a ..
The net profit of an investment is normally distributed with a mean of $10,000 and a standard deviation of $5,000. The probability that the investor's net profit will be between $12,000 and $15,000 is _____________.
John conducted his study to measure self-esteem among victims of domestic violence before and after they complete an 8-week program for abuse victims with 10 individuals. He calculated t = 1.9 from his data.
If two televisions are randomly selected, compute the probability that both televisions work. What is the probability at least one does not work?
Tthe United States during 1993 was $40,500. Assume the standard deviation was $8,500. Should a mobile home selling for $75,000 be considered an outlier? Explain why or why not.
An advantage of the permutation test over the t test for a difference in means is that - distribution interval or a bootstrap percentile interval
Multiple choice question using Forecasting techniques. Which among of the following models are best suited to forecast a time series with a stable seasonality component.
Suppose a single die is rolled once. You win $5 if a 1 or a 3 comes up, win $12 if a 5 comes up and lose $10 if a 2, 4, or 6 come up. What does the expected value tell you about the game?
Does knowing high school seniors' IQ scores indicate anything about their high school graduation grade point averages and Is there a relationship between a person's sociability and cheerfulness
question is the gender of a nurse related to the specialty he or she chooses?? a hospital administrator counted the
How much time should be allowed if we wish to ensure that at least 9 out of 10 students (on average) can complete it? (round to the nearest minute).
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