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Suppose that the height (x), in inches of a 20 year old man is a normal random variable with a mean of 70 inches and standard deviation of 5.102 inches. What is the 97.5th percentile of all 20 year old men's heights?
What is the probability the system works under these conditions? The probability A works is .90 and the probability B functions is also .90.
Unnithan, Houser, and Fernhall (2006) were interested in whether playing the game Dance Dance Revolution (DDR) affected the heart rate of overweight and nonoverweight adolescents differently. A group of 22 adolescents, 10 classified as overwei..
a) What is the coefficient of variation? Comment on this value. b) What is the probability of a day 's return being greater than 0.000022? c) What is the probability of a day 's return being less than 0?
a researcher concerned about the foreign ownership of the retail trade industry in the u.s. conducts a survey of
The percentage 'y' of impurities per batch in a certain chemical product is a beta random variable with probability density
question the statistical mean can be used to measure various aspects of the teen market including amount spent age of
Prior to conducting this experiment, the manager believed the variance in inspection errors was lower for experienced inspectors than for novice inspectors. Do the sample data support her belief? Test using α = .05.
Probability of selecting a row with that number of seeds germinating. Determine the standard deviation of the number of seeds per row that germinated.
A pair of dice is tossed and the number of dots on the uppermost faces are observed. Let X denote the random variable defined as the larger of the two numbers.
Rulertown wants to minimize the average distance between the fire station and a fire. Where should the fire station be located?
Calculate the expected value of your portfolio and calculate the expected standard deviation of your portfolio.
A local television station plans to drop four Friday
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