A study of a local high school tried to determine the mean number of text messages that each student sent per day. The study surveyed a random sample of 123 students in the high school and found a...

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Extracted text: A study of a local high school tried to determine the mean number of text messages that each student sent per day. The study surveyed a random sample of 123 students in the high school and found a mean of 200 messages sent per day with a standard deviation of 66 messages. Determine a 95% confidence interval for the mean, rounding all values to the nearest whole number. Submit Answer attempt i out of 2 Privacy Policy Terms of Service Copyright © 2021 DeltaMath.com. All Rights Reserved. novo