Engineering, 10.05.2021 14:00 Fvmousdj5

1. The most common blood typing system divides human blood into four groups: A, B, O, and AB. The following bar
graph presents the frequencies of these types in a sample of
150 blood donors.
a. Which is the most frequent type?
b. True or false: More than half of the individuals in the
The sample had type O blood.
c. True or false: More than twice as many people had type A blood as had type B blood. a)1,b)1,c)1 point
2. The weights of a sample of nine football players are 78, 72, 68, 73, 75, 69, 74, 73, 72. Find the variance and the standard deviation.

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1. The most common blood typing system divides human blood into four groups: A, B, O, and AB. The...