Here another way to check using system of linear equations. there are two ways of doing this either by substitution or elimination but I chose to do elimination because it’s a bit easier.
$65 × 25% $823×21.4% $33,333×4.3% $12,831×52% $44,893×3.4%
1 answer:
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Answer:
4.0486
Step-by-step explanation:
The margin of error is calculated using
Where n=60 is the sample size and is the population standard deviation.
The critical value corresponding to 95% confidence interval is
We substitute the values to obtain;