Nga, Kai, and Jason volunteer in the school library. They want to find the average number of pages of a library book. It would b
e unreasonable to calculate the number of pages in every book to find the average. They decide they need to find a valid sample. Inga suggests choosing 100 books from the history section to get a sample.
Kai suggests randomly selecting 100 books from the library’s entire catalog.
Jason suggests using 100 books from the teen fiction section to get a sample.
Who suggested the best way to produce a random sample that is not biased?
Α * R = L where L is the length of the arc of the circle, R is the radius of the circle, and α is the central angle <span>measured </span>in radians, so:
