Question

If we expect to get a number less than 3 in eighty times spinning an eight-part spinner numbered 1 to 8, how many times would we have spun?

Answer 1

assuming a fair spinner (equal sections numbered 1-8), if we get a number less than 3 (so 1 and 2), that would be 2/8 or 1/4 of the total # of outcomes. if we get this outcome 80 times, then 80 represents 1/4 of the total number of spins. therefore, if 80 is 1/4 of the total spins, we simply multiply 4 * 80 to get the total number of spins.