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The number of cell phone minutes used by high school seniors follows a normal distribution with a mean of 500 and a standard deviation of 50. What is the probability that a student uses fewer than 600 minutes?
Consider a sample with data values of 10,20,12,17, and 16.... Compute the mean and median and explain how you get to the answer....
In business, investors are always interested in the tradeoff between returns and risk. Regression analysis is a statistical technique that can be used to quantify this risk.
Why can not we just do several two sample tests like we did in the last week. In your own words explain briefly also tell us what these are and what did it mean.
Assume that increasing and decreasing allergic reactions are equally likely if the training has no effect. Use alpha = .05
Using this information, calculate Blpha risk (probability of Type II error) if the true population mean really is 79.
What is the rejection point at α = .10 and indicate if you would accept or reject H o ?
What are the assumptions and requirements for an LP model to be formulated and used? Under what conditions will an LP problem: be unbounded? be infeasible? have more than one optimal solution?
Determine the mean and standard error of the x - bar distribution.
The number of shark attacks per year in the US is distributed approximately normal, with a Variance of 31.8 and a standard deviation of 10.
WHich sampling method from the choices listed above would be best? Describe how you would carry out your chosen sampling method of a student from part (a)
Test the hypotheses that the average household income in the township is greater than $100,000. Hint: Start by stating the null and alternative hypotheses.
NCAA Basketball Tournament. Each year, 64 college basketball teams compete in the NCAA tournament. Sandbox.com recently offered a prize of $10 million to anyone who could correctly pick the winner in each of the tournament games.
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