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Please I need help with this ….the b part of the question

Please I need help with this ….the b part of the question-example-1
User Vboctor
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1 Answer

1 vote

Answer:

Explanation:

19.6<x<30.5 = p(x<30.5)-p(x<19.6)

p(x<30.5)= (30.5-23.2)/2.7= 2.7037= 2.7 (using a normal table) this has a probabilty of .9965

p(x<19.6)=(19.6-23.2)/2.7= -1.3333= -1.33 (using a normal table) this has a probability of (1-.9082)= .0918

.9965-.0918= .9047

User Btc Sources
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