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standard deviation 1.2. Random selection

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Suppose x is a random variable with mean and standard deviation. If a large number of trials is observed, at least what
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2. asked by jake
3. 785 views
standard deviation 1.2. Random selection of 70 found a mean of 5.2. I have to find a 87% confidence level given this info?
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2. asked by Sandra
3. 358 views
Random variables X and Y are both normally distributed with mean 100 and standarddeviation 4. It is known that random variable
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2. asked by Rob
3. 604 views
Consider a binomial random variable where the number of trials is 12 and the probability of success on each trial is 0.25. Find
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2. asked by John
3. 6,970 views
The foot lengths of a random sample of 63 men had a mean of 28 cm and a standard deviation of 2.8 cm, while a random sample of
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2. asked by JAmes
3. 342 views
The foot lengths of a random sample of 63 men had a mean of 28 cm and a standard deviation of 2.8 cm, while a random sample of
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2. asked by JAmes
3. 275 views
A population X has a mean of 16 and standard deviation of 12. For a random sample size n=36 the mean and standard deviation of
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2. 70 views
population has mean 53 and standard deviation 12. Calculate the standard deviation of x bar for a random sample of size 12.
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2. asked by Bridget
3. 535 views
In a random sample of 63 women at a company, the mean salary is $48,902 with a standard deviation of $5270. In a random sample
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2. asked by sweet12
3. 696 views
In a random sample of 63 women at a company, the mean salary is $48,902 with a standard deviation of $5270. In a random sample
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2. asked by sweet12
3. 835 views

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