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
A) invalid. Her sample size is too small.
B) invalid. Her sample size is too large.
C) valid. She used a representative sample.
D) bias. She wants schools to buy more new books.
Answers (1)
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “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 ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers
You Might be Interested in
Slope is 1 over 4 and (1,-2) is on the line
Answers (1)
65/9=p+1/9 how do you solve
Answers (2)
A community center is organizing a dance. There are four large columns arranged at the corners of a square. The decorating committee will hang one large streamer from each column to every other column. How many streamers are needed?
Answers (1)
Twice a number is less than or equal to the sum of a number and 15
Answers (1)
Factorise 4b^2 + 16b expand (a-1) (a-2) factorise x^2+8x+7 evaluate y^6 divide y^2 If x=-1 and y=5, find z when z=x^2+2y^2 Make x the subject, y=4x-3
Answers (1)
New Questions in Mathematics
During his first training session, Milo walked for 30 min and ran for 20 min. How many minutes did Milo train the first day? Write an addition equation that represents Milo's training session.
Answers (2)
Albert is a server at an all-you-can-eat sushi restaurant. At one table, the customers ordered 4 child buffets and 1 adult buffet, which cost a total of $86.
Answers (1)
Mai earns $7 per hour mowing her neighbors lawns. she also earns $14 for hauling away bags of recyclables for some neigbors. Priya babysits her neigbors children. The table shows the amount of monet m she earnd in h hours.
Answers (1)
A restaurant had 163 diners on Friday night. By Monday evening, 24 of those diners had reported to ER. Stool cultures for salmonella were positive in all 24 diners.
Answers (1)
Complete these ordered pairs for this equation. (0,), (-1,), (2,) y=4
Answers (1)