Normal distribution with a population mean related problem
Assume GRE scores form a normal distribution with a population mean of 750 and a population standard deviation of 150. If you take a random sample of n = 8 students, what is the probability that the sample mean will be more than 760?
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A researcher knows that the population mean among college students taking the Social Conformity Test is a "neutral" 100. (scores higher than 100 are assumed to represent more conformity than average, and those lower than 100 indicate less conformi
Suppose that the average height for college men is 66 inches. If the height distribution is bell-shaped, and 95% of the men have heights between 60 inches and 72 inches, what is the standard deviation of heights for this population?
Suppose that an airplane engine will fall, when in flight, with probability 1-p independently from engine to engine; suppose that the airplane will make a successful flight if at least 50 percent of its engines remain operative. For what values of
D.O. Better, operations manager for Luxury Products, Inc., is forecasting the coming month's (October's) demand for his best-selling product based on the following dataWhat is the forecast for October (month 10)?
The mean of the population was computed to be 126.9 grams and the standard deviation was 1.20 grams. Which food results in a more uniform weight?
What are the basic assumptions made when using time series techniques and causal techniques?
Suppose you are the coach of a church basketball team and are asked how many ways you can assign positions to your players (that would be five different positions) with a roster of 10 players. How many possible ways can you position your players?
A random sample of 100 patients taken at a community hospital shows the mean time for a patient to see a physician is 28 minutes with a standard deviation of 8 minutes.
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