Nakisa spent $328 on a total of 22 CDs and DVDs. If CDs cost $12 each and DVDs cost $16 each, how many CDs did Nakisa buy?

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.