Answer:
Step-by-step explanation:
Answer:
The boy's feet are closer to the surface of the pool because negative 4 over 5 < negative 2 over 5.
Y :!2!298-76-6-7-8-&-8-7-6
5 x 100,000,000 = 5,000,000,000
8 x 100,000 = 800,000
5,000,000,000 / 800,000 = 6250
Given:
μ = 55 in, population mean
σ = 6 in, population standard deviation
Part (a)
x = 48 in, the random variable
Calculate the z-score.
z = (x - μ)/σ
= (48 - 55)/6
= -1.667
From standard table, obtain
P(X < 48) = 0.12167
Answer: 0.1217 (tyo 4 dec.places)