Mathematics, 17.12.2020 06:10, jessicamendozacelis2
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 daims that on the same exam, nine times out of ten, seniors will have an average score within 3% of 81%. 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 19:20, harmonytaylor13
Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.
Answers: 1
Mathematics, 21.06.2019 22:30, badpotterchris
60 musicians applied for a job at a music school. 14 of the musicians play both guitar and drums. what is the probability that the applicant who gets the job plays drums or guitar?
Answers: 1
A field test for a new exam was given to randomly selected seniors. The exams were graded, and the s...