Calculus and Above

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For Steve, 1. Assume the...

For Steve,

1. Assume the random variable x is normally distributed with mean u = 87 and sigma = . Find indicated probability. P(73<x<77)

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2. The amounts of time employees at a large corporation work each day are normally distributed with a mean of 7.8 hours and a standard deviation of 0.36 hour. Random samples of size 22 and 36 are drawn from the population and the mean of each sample is determined. What happens to the mean and standard deviation of distribution of sample means as the size of sample increases.

If sample size n is 22, find mean and standard deviation of distribution of sample means.

The mean of distribution of sample means is _____

Standard deviation of distribution of sample means is

1. Assume the random variable x is normally distributed with mean u = 87 and sigma = . Find indicated probability. P(73<x<77)

--

2. The amounts of time employees at a large corporation work each day are normally distributed with a mean of 7.8 hours and a standard deviation of 0.36 hour. Random samples of size 22 and 36 are drawn from the population and the mean of each sample is determined. What happens to the mean and standard deviation of distribution of sample means as the size of sample increases.

If sample size n is 22, find mean and standard deviation of distribution of sample means.

The mean of distribution of sample means is _____

Standard deviation of distribution of sample means is

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