What is the probability that a randomly selected Californian age 18 to 64 exercises for at least 150 minutes per week? Illustrat
e by noting all relevant details on the normal curve below, and shading the appropriate region.
HELP!! PLEASE!
1 answer:
Answer:
Step-by-step explanation:
This is a normal distribution question with
Mean = 153
Standard Deviation= 10
Since we know that score

a)
P(x > 150.0)=?
The z-score at x = 150.0 is,

This implies that
P(x > 150.0) = P(z > -0.3)
= 1 - P(z < -0.3) = 1 - 0.3820885778110474
P(x > 150) = 0.6179
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