How many counterexamples do you need to prove a conjecture to be false

Thirty-two percent of fish in a large lake are bass. Imagine scooping out a simple random sample of 15 fish from the lake and observing the sample proportion of bass.

If there are 1,000 milligrams in 1 gram, convert 320 milligrams to grams.

A librarian put 39 books back on the shelves before lunch. Of the books, 13 were non-fiction. What is the ratio of the number of non-fiction books to the total number of books the librarian put away before lunch? A. 1 to 2 B. 1 to 3 C. 3 to 1 D.

the temperature dropped 3.5 degrees every hour for 5 hours. how much did the temperatures drop in all?

Gavin deposited $613 into a savings account seven years ago. The account earns an interest rate of 3.4% compounded monthly. What is the balance of the account today?

How do I solve the equation to - 63 + w = 55

are combinations of numbers and operations what is the word that fills in the blank

Brian wanted to build a wooden planter box for his garden with a volume of 32 cubic feet. If he constructed the planter with a height of 1 foot and a width of 4 feet, what should the length of the planter be, in feet?

Two and three eighths minus three fourths is

3 is 1 percent of what amount