Can someone plz help me
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Answer:
P(X<65)=0.9452
Step-by-step explanation:
This is a normal distribution problem.
-Given the mean age is 53 years and the standard deviation is 75, the probability of dying before age 65 is calculated as:
#We check the value of z=1.60 on the z table:
Hence, the probability of dying before 65 is 0.9452
In the numerator, we can pull a 7 out of the expression 7x + 14 to get the product 7(x + 2). In the denominator, we can factor the expression 2x² + x - 6 like this:
Our fraction can now be written as
the only factor the numerator and denominator share in this case is x + 2.