Which sample is representative of the population being studied?
A.
To learn the in-fligh...
Mathematics, 21.02.2020 19:58 evansh78
Which sample is representative of the population being studied?
A.
To learn the in-flight seat preferences of passengers, an airline polls all its business travelers.
B.
To learn how many Americans like action movies, a group of students survey people at a downtown movie theater.
C.
To learn which of two writers, Charles Dickens or Leo Tolstoy, is more popular among students of literature, Dean surveyed students in one college library.
D.
To learn how many students at her school spend more than $10 on books in a month, Mia speaks to every sixth student she meets in the school hallway.
Answers: 2
Mathematics, 21.06.2019 17:30
If the speed of an electromagnetic wave is 100,000 cm/s and its wavelength is 100 cm, what is its frequency? a) 100,000 cycles per second (hz) b) 1 × 10-3 cycles per second (hz) c) 10,000,000 cycles per second (hz) d) 1,000 cycles per second (hz)
Answers: 1
Mathematics, 21.06.2019 19:30
Solve for x and y: 217x + 131y = 913; 131x + 217y = 827
Answers: 1
Mathematics, 21.06.2019 22:30
Which statement shows that 6.24 is a rational number? a. 6.24 = 6.242424 b. 6.24 = 6.24 c. 6.24 = 68⁄33 d. 6.24 = 66⁄25
Answers: 1
Social Studies, 19.07.2019 11:00
Social Studies, 19.07.2019 11:00
Social Studies, 19.07.2019 11:00
Social Studies, 19.07.2019 11:00
Social Studies, 19.07.2019 11:00