Section 9.2 Homework Question 4

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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:

nothing;

Upper bound: nothing

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This question is taken from Math 136 – Introduction to Statistics » Summer 2021 » Section 9.2 Homework