A bucket holds 450 ounces (oz.) of water when full. The bucket loses 0.5 oz. of water every second. In how many seconds will the bucket be 30% full?

The head librarian at the library of congress has asked her assistant for an interval estimate of the mean number of books checked out each day. the assistant provides the following interval estimate: from 740 to 920 books per day. what is an efficient, unbiased point estimate of the number of books checked out each day at the library of congress?

The number of nails of a given length is normally distributed with a mean length of 5.00 in, and a standard deviation of 0.03 in. find the number of nails in a bag of 120 that are less than 4.94 in. long.

Measures of the angle of r, 31 s (x+4) t (3x+9)