Question

A random sample of 159 recent donations at a certain blood bank reveals that 88 were type A blood. Does this suggest that the actual percentage of type A donations differs from 40%, the percentage of the population having type A blood

Answer 1

A random sample of 159 recent donations at a certain blood bank reveals that 88 were type A blood.  State the appropriate null and alternative hypotheses.

H0: p = 0.40

What is blood bank?

Ha: p > 0.40H0: p ? 0.40

Ha: p = 0.40 H0: p = 0.40

Ha: p ? 0.40H0: p = 0.40

Ha: p < 0.40

A blood bank is a facility where donated blood is collected and maintained for use in blood transfusions in the future. The phrase "blood bank" often refers to a department of a hospital where blood products are stored and where the necessary testing is carried out (to reduce the risk of transfusion related adverse events). However, it can also refer to a facility for collecting, and some hospitals do do it. Blood banking entails procedures for gathering, processing, testing, separating, and storing blood. Blood was initially transfused straight from donor to recipient before coagulation, but it was later found that by adding an anticoagulant and cooling the blood, it could be kept for a few days.

To learn more about blood bank from the given link:

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