9. For sufficiently large sample size, the random variable has a probability distribution centered at 0 a. Z-statistic b. t-statistic c. the sample mean d. A and B e. A and B and C

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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7. The sample mean estimator for the
population mean
a. has a small standard error
b. potentially has a small standard
error
c. is potentially unbiased
d. A and C
e. B and C
8. As the sample size increases, the
t-distribution becomes
a. more spread out and more like
the standard normal distribution
b. less spread out and more like the
standard normal distribution
С.
more symmetrical
d. A and C
е. В and C
9. For sufficiently large sample size, the
random variable has a probability
distribution centered at 0
a. Z-statistic
b. t-statistic
c. the sample mean
d. A and B
e. A and B and C
Transcribed Image Text:7. The sample mean estimator for the population mean a. has a small standard error b. potentially has a small standard error c. is potentially unbiased d. A and C e. B and C 8. As the sample size increases, the t-distribution becomes a. more spread out and more like the standard normal distribution b. less spread out and more like the standard normal distribution С. more symmetrical d. A and C е. В and C 9. For sufficiently large sample size, the random variable has a probability distribution centered at 0 a. Z-statistic b. t-statistic c. the sample mean d. A and B e. A and B and C
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