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Sagot :
If the confidence level will increase, the margin of error will also increases.
What is margin of error?
The margin of error is defined a range of values below and above the sample statistic in a confidence interval.
What is confidence interval?
The confidence interval is a way to show what is uncertainty is with a certain statistic.
According to the given question
Environmentalist estimating true mean weight or all cars.
For the true mean weights of 2.8 to 3.4 tons the confidence level is 90%.
Since, the confidence level increases, the critical value increases and hence the margin of error increases.
Therefore, if the confidence level will increase, the margin of error will also increases.
Find out more information about confidence interval and margin error here:
https://brainly.com/question/15079850
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