. A survey asked the question “What do you think is the ideal number of children…
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Question “. A survey asked the question “What do you think is the ideal number of children…”
. A survey asked the question “What do you think is the ideal
number of children for a family to have?” The 424 females who
responded had a median of 2, mean of 3.11 , and standard
deviation of 1.9.
(a) What is the point estimate of the population mean?
(b) Find the standard error of the sample mean.
(c ) What is the 95% confidence interval ?
Answer
Ans a
Point estimation of population mean =
= #strongTag0$
Ansb:
Standard error of the sample mean =se= Standard deviation/sqrt(n).
=1.9 / sqrt(424)
= 0.092272
Standard error of the sample mean
Ansc:
What is the confidence interval of 95%?
/2 is at 95% CI 1.96
/2 *se)
(3.11-1.96*0.0923,3.11+1.96*0.0923)
(2.929,3.291)
Conclusion
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