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At Mike’s favorite coffee shop, the coffee of the day is either a dark roast, a medium roast, or a light roast. From past experience, Mike knows that the probability of the coffee being a light roast is 0.15 and the probability of the coffee being a dark roast is 0.25. What is the probability of the coffee of the day not being a light roast or a dark roast on the next day that Mike visits the coffee shop?

Respuesta :

Answer:

 

Step-by-step explanation:

Given

Probability that coffee being a light roast is P(1)=0.15

Probability that coffee being a dark roast is P(2)=0.25

considering the event being independent of each other

Probability that coffee not being a light roast or dark roast is given by

P(not being dark or light roast)=1-P(1)-P(2)

P(not being dark or light roast)=1-0.15-0.25

P(not being dark or light roast)=0.6

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