Human blood may contain either or both of two antigens, AandB. Blood that containsonly theAantigen is called typeA, blood that contains only theBantigen is called typeB, blood that contains both antigen is called typeAB, and blood that contains neitherantigen is called typeO. At a certain blood bank, 35% of the blood donors have typeAblood, 10% have typeB, and 5% have typeAB.(a) What is the probability that a randomly chosen blood donor is typeO

The random variable x represents the number of phone calls an author receives in a day, and it has a poisson distribution with a mean of 8.7 calls. what are the possible values of x

Lana's family entered a 5-kilometer race lana's average step length is about 0.5 meter how many steps will she need to take the finish

Astudent is determining the influence of different types of food on the growth rate of spiders. she feeds one group of spiders two caterpillars twice a week. the other group received similarly-sized beetles twice a week. she records the amount of time required for individuals to reach sexual maturity. her hypothesis is that the spiders feeding on caterpillars will have a faster growth rate because caterpillars have a higher protein content compared to beetles. in this experiment, what is the dependent variable? spiders assigned to different feeding groups. time required to reach sexual maturity number of prey items fed twice a week. growth rates of each group.