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If X is a normal random variable with a standard deviation of 10, then 6X has a standard deviation equal to?
Suppose that you have a sample mean of 49 and a standard deviation of 3, but now found those values from a sample of 20 observations. test the hypothesis allowing for type 1 error to equal .05.
Suppose the federal government proposes to give a substantial tax break to automakers producing midsize cars that get a mean mileage exceeding 31 mpg.
How many 5-card hands are possible from a standard deck of 52 playing cards if the cards are drawn without replacement?
Compute the predicted score for a male student with a GPA of 3.5. Repeat the analysis for a female student.
What's the probability that at least one of the next two sample means will fall more than 2s- x from the target mean µx¯? Show your work.
5460 5900 6090 6310 7160 8440 9930. Find the 99% confidence interval for the mean number of home fires started by candles each year.
Experts might argue that if the agency hired people regardless of their nationality, the distribution of nationalities would be the same.
Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $30,000 and $45,000.
On average, a pair of running shoes can last 18 months if used every day. The length of time running shoes last is exponentially distributed.
(a) What is the probability that during the next minute three cars will arrive? (b) What is the probability that during the next ?ve minutes three cars will ar
Explain why a student ranked number one in the class based on interval measurement may be misleading.
Reading scores in Atlanta The Trial Urban District Assessment (TUDA) is a government-sponsored study of student achievement in large urban school districts.
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