Mathematics, 30.03.2020 21:34, litzyguzman13
More than 100 million people around the world are not getting enough sleep; the average adult needs between 7.5 and 8 hours of sleep per night. College students are particularly at risk of not getting enough shut-eye. A recent survey of several thousand college students indicated that the total hours of sleep time per night, denoted by the random variable X, can be approximated by a normal model with E(X) = 6.94 hours and SD(X) = 1.12 hours. Find the probability that the hours of sleep per night for a random sample of 4 college students has a mean x bar between 6.6 and 6.93. (use 4 decimal places in your answer)
True or false?
Answers: 3
Mathematics, 21.06.2019 15:00, greekfreekisdbz
Use the graph to determine the range. which notations accurately represent the range? check all that apply. (ββ, 2) u (2, β) (ββ, β2) u (β2, β) {y|y β r, y β β2} {y|y β r, y β 2} y < 2 or y > 2 y < β2 or y > β2
Answers: 1
Mathematics, 21.06.2019 18:50, firenation18
The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.3
Answers: 1
Mathematics, 21.06.2019 22:30, lamooothegoat
The pair of coordinates that do not represent the point( 5,150β) is a. (5,-210) b. (5,210) c. (-5,330) d. (-5,-30)
Answers: 1
More than 100 million people around the world are not getting enough sleep; the average adult needs...
Business, 21.07.2019 10:00
English, 21.07.2019 10:00
English, 21.07.2019 10:00
Mathematics, 21.07.2019 10:00