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30% of college freshmen support increased military spending. If 12 college freshmen are randomly selected, find the probability that more than 5 selected students support increased military spending.
To what probabilities do each of the following sigma levels correspond to, based on a standard normal curve: 3 sigma, 4sigma, 5 sigma, and 6 sigma? (Hint: Use the NORMSDIST function in Excel.
Using a critical value, test hypothesis at the 1% level of significance.
Then describe trade-offs which will happen when you lower sample to $10,000 to meet their budget.
What descriptive summary measures would you use to present the data. which measure is the best to use and which is the worse and why?
use the following sample data to test whether the GPA are different at the 0.05 level of significance.
Using this information, calculate Beta risk (probability of Type II error) if the true population mean really is 77.
what is the sampling distribution model of the percent passing developmental courses for your campus in Fall 2009 and provide the percentages between which we would expect to see 68% of the sampling distribution, 95% of the sampling distribution
What are the mean and the standard deviations for the population of produced with this process?
Wheel-Rite has agreed to ship the maximum number of wheel bearings that it produces each day to Itex when an order has been received.
What is the arithmetic mean selling price?
The owner of Britten's Egg Farm wants to estimate the mean number of eggs laid per chicken. A sample of 20 chickens shows they laid an average of 22 eggs per month with a standard deviation of 2.03 eggs per month.
Where should the warranty limits be set so that only 10% of the TVs need repairs at the manufacturer's expense?
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