A quality control expert at a drink bottling factory took a random sample of9 bottles from a production run of over 1,000 bottles and measured theamount of liquid in each bottle in the sample. The sample data wereroughly symmetric with a mean of 505 mL and a standard deviation of6 mL.Based on this sample, which of the following is a 95% confidence intervalfor the mean amount of liquid per bottle (in mL) in this production run?Choose 1 answer:A 505 3.720505 3.920505 +4.524D505 +4.612E505 + 12

The sample size: n=9 The sample mean: x¯=505 mL The sample standard deviation: s=6 mL Confidence…

Answered: A quality control expert at a drink…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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 114 students in the high school and found a mean of 195 messages sent per day with a standard deviation of 73 messages. Determine a 95% confidence interval for the mean, rounding all values to the nearest whole number.
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