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Section 9.2 Homework Question 4
Question
Section 9.2 Homework
4.
A simple random sample of size n is drawn from a population that is normally distributed. The sample mean,
,
is found to be
,
and the sample standard deviation, s, is found to be
.
(a) Construct
%
confidence interval about
if the sample size, n, is
.
(b) Construct
%
confidence interval about
if the sample size, n, is
.
(c) Construct
%
confidence interval about
if the sample size, n, is
.
(d) Could we have computed the confidence intervals in parts (a)-(c) if the population had not been normally distributed?
a) Construct
%
confidence interval about
if the sample size, n, is
.
Lower bound:
;
Upper bound:
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This question is taken from Math 136 – Introduction to Statistics » Summer 2021 » Section 9.2 Homework