People with type O-negative blood are universal donors whose blood can safely be given to anyone. Only 7.2% of the population has O-negative blood. A mobile blood center is visited by 20 donors in the afternoon. Let X denote the number of universal donors among them. assume that x follows a binomial distribution. the probability that x is less than or equal to 1 is

Probability that x is less than or equal to 1  = 0.5551

Step-by-step explanation:

Given -

People with type O-negative blood are universal donors whose blood can safely be given to anyone. Only 7.2% of the population has O-negative blood.

Probability of sucess (population has O-negative blood ) = p = 7.2% = .072

Probability of failure ( q) = 1 - p = 1 - .072 = 0.928

Sampe size ( n ) = 20

Let X denote the number of universal donors among them

probability that x is less than or equal to 1 =

=                 ( Using  binomial distribution)

               =              

               = +

               = 0.22436 + .33074

               = 0.5551

the most boring ever written

step-by-step explanation:

i am writing something. yes, i plan to make it the most boring thing ever written. i go to the store. a car is parked. many cars are parked or moving. some are blue. some are tan. they have windows. in the store, there are items for sale. these include such things as soap, detergent, magazines, and lettuce. you can enhance your life with these products. soap can be used for bathing, be it in a bathtub or in a shower. apply the soap to your body and rinse. detergent is used to wash clothes. place your dirty clothes into a washing machine and add some detergent as directed on the box. select the appropriate settings on your washing machine and you should be ready to begin. magazines are stapled reading material made with glossy paper, and they cover a wide variety of topics, ranging from news and politics to business and stock market information. some magazines are concerned with more recreational topics, like sports card collecting or different kinds of hairstyles. lettuce is a vegetable.