Today we had a lesson about confidence intervals. We did a couple questions from old exams.
A confidence interval is: the interval where one can expect the mean of a sample to "happen" with a certain amount (90%,95%,99%) of confidence. Quoted by Mr. Maksymchuk.
To find confidence intervals on the calculator:
#1. STAT
#2. TESTS
#3. Down to A: 1-PropZInt.
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