The sample mean is 68, the population standard deviation is 15. and the confidence levet is 90%. Which of the following
Posted: Wed May 11, 2022 3:52 pm
- The Sample Mean Is 68 The Population Standard Deviation Is 15 And The Confidence Levet Is 90 Which Of The Following 1 (10.39 KiB) Viewed 18 times
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A high school principal is interested in how many hours each student spends on homework each day. She collects a sample of 50 and finds a sample mean of 1.4. She constructs confidence intervals at the 95% tevel. The margin of error is 0.8. What is the width of the confidence interval? O 11 12 04 0.16