Mathematics

Mathematics, 31.07.2019 07:10, jenashaqlaih

If x is a normal random variable with a standard deviation of 10, then 3x has a standard deviation equal to:

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Mathematics, 24.06.2019 22:30, mj1226

Select all of the true statements about the standard deviation of a quantitative variable. standard deviation is resistive to unusual values. standard deviation represents how far a group of values are from the mean of those values, on average. the standard deviation of a set of values is equal to 00 if and only if all of the values are the same. changing the units of a set of values (e.g., converting from inches to feet) does not affect its standard deviation. standard deviation is always a nonnegative value. if a set of values has a mean of 00 and a standard deviation that is not 0,0, then adding a new data point with a value of 00 will have no effect on the standard deviation.

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Mathematics, 11.07.2019 17:20, robin6150

Suppose a binomial random variable consists of 10 trials with a success of probability 0.35. what are the mean and standard division for this binomial random variable? the mean is 3.5 and the deviation is 2.275 the mean is 3.5 and a standard deviation is 1.508. the mean is 10 and the standard deviation is 0.35. the mean is 0 and the standard deviation is 1 none of the other answers are correct

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Mathematics, 17.07.2019 06:10, Byanka032801

The random variable x represents the number of boys in a family with three children. assuming that births of boys and girls are equally likely, find the mean and standard deviation for the random variable x. a) mean: 1.50; standard deviation: .87 b) mean: 2.25; standard deviation: .76 c) mean: 2.25; standard deviation: .87 d) mean: 1.50; standard deviation: .76

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Mathematics, 30.07.2019 14:10, Inrimid3619

The random variable x represents the number of credit cards that adults have along with the corresponding probabilities. find the mean and standard deviation. x p(x) 0 0.07 1 0.68 2 0.21 3 0.03 4 0.01 a.mean: 1.23; standard deviation: 0.44 b.mean: 1.30; standard deviation: 0.32 c.mean: 1.30; standard deviation: 0.44 d.mean: 1.23; standard deviation: 0.66

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