Mathematics, 11.03.2020 18:28 rickimmorgan

There are 46 students in an elementary statistics class. On the basis of years of experience, the instructor knows that the time needed to grade a randomly chosen first examination paper is a random variable with an expected value of 5 min and a standard deviation of 4 min. (Round your answers to four decimal places.)(a) If grading times are independent and the instructor begins grading at 6:50 P. M. and grades continuously, what is the (approximate) probability that he is through grading before the 11:00 P. M. TV news begins?1(b) If the sports report begins at 11:10, what is the probability that he misses part of the report if he waits until grading is done before turning on the TV?2

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 20:30, NeriyahY

Find the zeros of each function. f(x) = 6x^2 - 7x - 20

Answers: 1

continue

Mathematics, 21.06.2019 22:30, dancer4life5642

Question 3(multiple choice worth 1 points) use the arc length formula and the given information to find r. s = 16 cm, θ = 48°; r = ? sixty divided by pi cm thirty divided by pi cm one third cm one hundred twenty divided by pi cm

Answers: 1

continue

Mathematics, 22.06.2019 00:00, onlineK

Zahra runs a 500-meter race at a constant speed. which graph shows her distance from the finish line during the race?

Answers: 1

continue

Mathematics, 22.06.2019 00:00, makikorising1226

Afair survey question is one that does not encourage biased responses. which survey question is fair? a.) do you agree that only unethical people take credit for other people’s work? b.) have you ever taken credit for somebody else’s work? c.) have you ever engaged in unethical behavior, such as taking credit for somebody else’s work? d.) don’t you think it is unethical to take credit for somebody else’s work?

Answers: 1

continue

You know the right answer?

There are 46 students in an elementary statistics class. On the basis of years of experience, the in...