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A random sample of size 20 drawn from a normal

Suppose we take a random sample of size n from a normal population with variance, σ2 . It can be shown that (n−1)s2/σ2 has a
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A random sample of size 20 drawn from a normal distribution has a sample mean of 8 and a sample standard deviation of 4.A)
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A random sample of size n is to be drawn from a population with a mean = 1100 and SD = 300. What sample size would be necessary
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A random sample of size n is to be drawn from a population with a mean = 500 and sd = 100. What sample size would be necessary
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A random sample of size n is to be drawn from a population with a mean = 500 and sd = 100. What sample size would be necessary
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A simple random sample of a size n is drawn from a population that is normally distributed. The sample mean, x is found to be
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An unknown population X has a mean of 128 and a standard deviation of 32. A random sample of size n=64 are drawn from the
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1) Let z be a normal random variable with mean 0 and standard deviation 1. The 4th decile of z is ___.a) 0.67 b) –1.25 c)
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if random sample are selected from a normal population with a s=10 and the distrubtion of sample means has a standard error of
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A random sample of size n = 40 is taken. Conduct a goodness of fit test to see whether this sample appears to have been selected
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