PLEASE HELP people with type O negative blood or universal donors. That is, any patient can receive a transfusion Of O-negative blood. Only 12% of the American population has O negative blood. 10 people appear at random to give blood, what is the probability that none of them is the universal donor.
1-0
2-0.280
3-0.526
4- 0.720
5- 1

Sera sells t-shirts at the beach. she believes the price of a t-shirt and the number of t-shirts sold are related. she has been experimenting with different prices for the t-shirts. she has collected a data set with five pairs of data; each consists of the price of a t-shirt and the number of shirts sold. the independent variable, which will go on the x-axis, is . the dependent variable, which will go on the y-axis, is the