Mathematics, 16.04.2021 01:00 dontcareanyonemo

1. A survey of 30 adults found that the mean age of a person's primary vehicle is 5.6 years. Assume the standard deviation is 0.85 year. If the mean age of all primary vehicles is between 5 2 years and 6.0 years, approximately which confidence level does the range represent?
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1. A survey of 30 adults found that the mean age of a person's primary vehicle is 5.6 years. Assume...