_______________
E = _______________
_______________< < _______________
Solution :
Given that,
a) Z/2 = Z0.025 = 1.96
b) Margin of error = E = Z/2
* (
/n)
= 1.96 * ( 3.5 / 35)
= 1.160
c) At 95% confidence interval estimate of the population mean
is,
- E < < + E
45.6 - 1.160 < < 45.6 + 1.160
44.4 <
< 46.8
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