Mathematics, 09.06.2021 08:40 bettybales1986
3. (09.07)
A field test for a new exam was given to randomly selected seniors. The exars were graded, and the sample mean and sample standard deviation were calculated. Based on the results, the
exam creator claims that on the same exam, nine times out of ten, seniors will have an average score within 3% of 69%.
Is the confidence interval at 90%, 95%, or 99%? What is the margin of error? Calculate the confidence interval and explain what it means
terms of the situation. (10 points)
Answers: 3
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3. (09.07)
A field test for a new exam was given to randomly selected seniors. The exars were grade...
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