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**noore** which of the following samples would have the smallest standard error?

a.n=100 scores from a population with o=20

b.n=25 scores from a population with o=10

c.n=25 scores from a population with o=20

d.n=100 scores from a population with o=10

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if sample of n=4 scores is obtained from a population with m=70 and o=12,then a sample mean of m=76 would corresponds to a z-score of ______?

a.z=1.00

b.z=2.00

c.z=0.50

d.z=0.25

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a sample of n=4 sores has the standard error o 12 what is the standard deviation of the population from which the sample was obtained?

a.48

b.6

c.24

d.3

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assuming that all other factors are held constant as the population variability increases the standard error will also increase ?

a.true

b.false

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for a normal population with a mean of u=80 and a standard deviation of o=10 what is the probability of obtaining a sample mean greater than m=75 for a sample of n=25 scores?

a.p=0.6915

b.p=0.3085

c.p=0.9938

d.p=0.0062