People with O-negative blood are called universal donors because ...

[hbsimmons88]

People with O-negative blood are called universal donors because O-negative blood can be given to anyone else regardless of the recipient's blood type.
 
  About 6 of people have type O-negative blood.
  A clinic is running a blood drive. If at least 220 O-negative donors give blood, the clinic will have sufficient O-negative blood for the coming month. If 4000 donors come to the blood drive, what's the probability that the clinic will not have sufficient O-negative donors?
  A) 0.9032 B) 0.9131 C) 0.0869 D) 0.0968

Question 2

In a clinical study of an allergy drug, 108 of the 202 subjects reported experiencing significant relief from their symptoms.
 
  At the 0.01 significance level, test the claim that more than half of all those using the drug experience relief.

[beccamahon]

Answer to Question 1

C

Answer to Question 2

Great help.

[hbsimmons88]

TYSM

[raili21]

Gracias!