The librarian at the New York City Public Library has asked her ...

[rlane42]

The librarian at the New York City Public Library has asked her assistant for an interval estimate of the mean number of books checked out each day. The assistant took a sample and found the mean to be 880 books. She provides the librarian with an interval estimate of between 790 and 970 books checked out per day. An efficient, unbiased point estimate of the number of books checked out each day at the New York City Public Library is:
 a. 790 c. 90
  b. 880 d. None of these choices.

Question 2

The standardized residual is defined as:
 a. residual multiplied by the square root of the standard error of estimate.
  b. residual multiplied by the standard error of estimate.
  c. residual divided by the square of the standard error of estimate.
  d. residual divided by the standard error of estimate.

[ansleighelindsey]

Answer to Question 1

B

Answer to Question 2

D

[rlane42]

Excellent

[rachel]

Thanks for the timely response, appreciate it