1)Confidence interval is obtained as Select one: a. point estimate ± critical va
ID: 3331740 • Letter: 1
Question
1)Confidence interval is obtained as
Select one:
a. point estimate ± critical value
b. point estimate ± standard error
c. point estimate ± margin of error
2) Given the sample proportion (p ) and sample size, n, we wish to obtain the confidence interval estimate of the population proportion (p). The margin of error of the confidence interval estimate is obtained as
Select one:
a. z(/2) ×((p(bar)(1-(p(bar))))/n)
b. z(/2) ×((p(1-p))/n)
3) Margin of error is obtained as
Select one:
a. point estimate ± critical value
b. critical value × standard error
c. point estimate × critical value
4) Suppose (1-)=0.9. The critical value, z/2 , is obtained in Excel using
Select one:
a. –NORM.S.INV(0.05)
b. –NORM.S.INV(0.1)
c. –NORM.S.INV(0.2)
5) Suppose (1-)=0.95 and n = 20. The critical value t/2, can be obtained in Excel using
Select one:
a. –T.INV(0.025, 19)
b. –T.INV(0.05, 19)
c. –T.INV(0.1, 19)
Explanation / Answer
1) c. point estimate ± margin of error
2) b. z(/2) ×((p(1-p))/n)
3) b. critical value × standard error
4) a. –NORM.S.INV(0.05)
5) a. –T.INV(0.025, 19)
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.