Answer:
0.9864
Step-by-step explanation:
The average sample mean is 295, and the standard deviation is:
σ = 15 / √17
σ = 3.64
The z-scores are:
z = (x − μ) / σ
z₁ = (-9) / 3.64
z₁ = -2.47
z₂ = (9) / 3.64
z₂ = 2.47
So the probability is:
P(-2.47 < Z < 2.47) = P(Z < 2.47) − P(Z < -2.47)
P(-2.47 < Z < 2.47) = 0.9932 − 0.0068
P(-2.47 < Z < 2.47) = 0.9864
9/9 =1
so basically you're doing 1 - 2/3 which equals 1/3 or one third
Answer: Just simply solve the problem, i'm sorry but i cant see the problem do you think you could just copy the question down?
Step-by-step explanation:
Answer:
x<52
Step-by-step explanation:
I added 21 to both sides
