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Alex

1.) The 95% confidence interval states that 95% 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.

a.) True

b.) False

My answer: False (population mean lies within the interval)

2.) If the null hypothesis that two means are equal is true, where will 97% of the computed z- values lie between?

a.) +- 2.58

b.) +- 2.33

c.) +- 2.17

d.) +- 2.07

e.) none of the above.

My answer: e : none of the above

3.) If the confidence interval includes 0, there is no difference in the pair of treatment means.

a.) Ture

b.) False

My answer: False