Mathematics, 06.11.2019 21:31 florencemarti7331
Afield test for a new exam was given to randomly selected seniors. the exams 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 5% of 75%. is the confidence interval at 90%, 95%, or 99%? what is the margin of error? calculate the confidence interval and explain what it means in terms of the situation.
Answers: 2
Mathematics, 21.06.2019 18:00, TheIncognateo
The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers
Answers: 2
Mathematics, 21.06.2019 21:00, leannaadrian
2x minus y equals 6, x plus y equals negative 3
Answers: 1
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