Question
We are told that the sample mean xbar=15, SE=5 and zmax=1.6 for our confidence interval. what...
We are told that the sample mean xbar=15, SE=5 and zmax=1.6 for our confidence interval. what is our confidence interval
Homework Answers
Answer #1
Solution :
Given that,
Z
/2
= 1.6
SE = 5
= 15
Margin of error (E) = Z/2*
SE
= 1.6 * 5
E = 8
A confidence interval estimate of the population mean is,
- E < 
<
+ E
15 - 8 <
< 15 + 8
7 <
< 23
(7, 23)
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