Mathematics, 15.10.2019 19:50 sansyboy7891

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 6% of 80%.

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. (10 points)

Answers: 2

Show answers

Another question on Mathematics

Mathematics, 21.06.2019 16:20

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

Answers: 3

Answer

Mathematics, 21.06.2019 22:00

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?

Answers: 1

Answer

Mathematics, 22.06.2019 01:00

What is the slope of the line? a. -5/2 b.2/5 c. 5/2 d.7/2

Answers: 1

Answer

Mathematics, 22.06.2019 02:30

Find the combined area of the triangles. click on the answer until the correct answer is showing.possible answers: a = 4 pi - 8a = 9 pi - 9/2 √3a = 16/3 pia = 16a = 27 pi

Answers: 1

Answer

You know the right answer?

Afield test for a new exam was given to randomly selected seniors. the exams were graded, and the sa...

Questions

Mathematics, 26.06.2019 01:00

What is the least common denominator of the fractions 4/15 1/6 and 3/4...

Mathematics, 26.06.2019 01:00

2^3 ( 1/4 + 4(36 ÷ 12) this is due tommorow and i will give you coins...

Mathematics, 26.06.2019 01:00

Just need with first 3. with the steps as well!