Determine the empirical rule
Determine the empirical rule and how is it employed to interpret data? If I have a standard deviation of 2 what does that mean in relation to this rule?
Please example of when it might be used.
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Assume IQ scores were obtained from randomly chosen sibling. For 20 such pairs of people, the linear correlation is 0.917 and equation of the regression line is y=6.44+0.94x, where x shows IQ score of the younger child.
Devise rule based upon failed log-in episodes for computer network given the time between failed episodes has exponential distribution with mean of 40 minutes.
A company's manufacturing process employs 500 gallons of water at a time. A "scrubbing" machine then removes most of a chemical pollutant before pumping the water into a nearby lake.
Insurance companies track life expectancy information to assist in determining the cost of life insurance policies. Last year the average life expectancy of all policy holders was 77 years.
In three independent flips of the balanced coin, let A denote {first flip is a head}, B denote {second flip is a head}, C denote { first two flips are heads}, D denote { three heads on the three flips}.
For borrowers with the good credit scores, the mean debt for revolving and installment accounts is $15,015 (BusinessWeek, March 20, 2006). Suppose the standard deviation is $3540 and that debt amounts are normally distributed.
In an article regarding the cost of health care, Money magazine reported that visit to a hospital emergency room for something as simple as a sore throat has a mean cost of $328
According to the Sleep Foundation, average night's sleep is 6.8 hours (Fortune, March 20, 2006). Suppose the standard deviation is .6 hours and that the probability distribution is normal.
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