i. The 95 percent confidence interval states that 95 percent of the sample means of a specified sample size selected from a population will lie within plus and minus 1.96 standard deviations of the hypothesized population mean.
Ii) A distribution of sample means is normally distributed with a mean equal to the population mean and a standard deviation equal to the standard error of the mean.
Iii) A sample mean is the best point estimate of a population mean.
A) (i) , (ii) and (iii) are all correct statements
B) (i) and (ii) are correct statements, but not (iii) .
C) (i) and (iii) are correct statements but not (ii) .
D) (ii) and (iii) are correct statements but not (i) .
E) All statements are false
Correct Answer:
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A)
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