subject
Mathematics, 25.03.2021 15:50 Mayrah7486

Erica wants to know how many books on average are in school libraries in her county. She randomly calls 50 school libraries in her county and finds out how many books they have. She adds the number of books together and divides by 50. Her conclusion is there are an average of 18,000 books in a school library. Erica's conclusion is bias. She wants schools to buy more new books.
bias. She wants schools to buy more new books. ,

invalid. Her sample size is too small.
invalid. Her sample size is too small. ,

invalid. Her sample size is too large.
invalid. Her sample size is too large. ,

valid. She used a representative sampl

ansver
Answers: 1

Another question on Mathematics

question
Mathematics, 21.06.2019 15:10
Figure abcde is a regular pentagon. segment ae is located at a (2, 1) and e (4, 1). what is the perimeter of abcde? 4 units 6 units 8 units 10 units
Answers: 1
question
Mathematics, 21.06.2019 20:00
How can you construct perpendicular lines and prove theorems about perpendicular lines
Answers: 3
question
Mathematics, 22.06.2019 01:10
To find the inverse of a number a, one can use the equation f(c) = a-1/c=0 where c is the inverse of a use the secant method of finding roots of equations to find the inverse of a = 2.5 ,er = 0.001%
Answers: 3
question
Mathematics, 22.06.2019 02:00
Two sides of a right triangle measure 2 units and 4 units. what is the area of the square that shares a side with the third side of the triangle?
Answers: 2
You know the right answer?
Erica wants to know how many books on average are in school libraries in her county. She randomly ca...
Questions
question
Social Studies, 20.09.2020 08:01
question
Mathematics, 20.09.2020 08:01