There are 3 boys for every 5 girls in Ms. Clancy's class. Ms. Strayhorne's class has 4 boys for every 6 girls. If each class has 12 boys, which class has fewer girls?|

Suppose a man is heterozygous for heterochromia, an autosomal dominant disorder which causes two different‑colored eyes in an individual, produced 25‑offspring with his normal‑eyed wife. of their children, 15 were heterochromatic and 10 were‑normal. calculate the chi‑square value for this observation.

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.

What is the 12th term of b(n)=-4-2(n-1)