Mathematics, 14.05.2021 09:10 MrConman8460
A field 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 71%.
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: 3
Mathematics, 21.06.2019 12:50
4. a spring scale is constructed so that each 0.10-n increment is separated by 0.50 cm. what spring constant is necessary for the scale to be accurate? -1.0n/cm -0.10n/cm -9.8 n/cm -0.20n/cm
Answers: 3
Mathematics, 21.06.2019 13:20
The ratio of two numbers is 5 to 4. the sum of the numbers is 99. what number is the greater of the two numbers?
Answers: 1
Mathematics, 21.06.2019 18:30
Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°
Answers: 2
A field test for a new exam was given to randomly selected seniors. The exams were graded, and the s...
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