Mathematics, 17.04.2021 03:30 neariah24

An environmentalist would like to estimate the true mean weight of all cars. To do so, she selects a random sample of 30 cars and determines that the 90% confidence interval for the true mean weight to be 2.8 to 3.4 tons. Which of the following would increase the margin of error for this confidence interval? selecting another sample
increasing the sample size
increasing the confidence level
decreasing the confidence level

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An environmentalist would like to estimate the true mean weight of all cars. To do so, she selects a...

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