2/14 just add the numerators and denomentators
Answer:
b
Step-by-step explanation:
9(y+6)+2y(y+3)/((y+3)(y+6))= optin b
Answer:
Step-by-step explanation:
a
Answer:
Step-by-step explanation:
Let X be the diameter of bolts produced in a machine shop
X is normal with mean = 6.46 mm and std dev = 0.05 mm.
We are to find the two diameters that separate the top 9% and the bottom 9%.
We can use std normal distribution value for this and from Z we can calculate X values
P(Z<z) = 0.09 and P(Z<z1) = 0.91
z=-1.341 and z1 = +1.341
Corresponding X values would be
for bottom 9%
X = 6.46-1.341*0.05 = 6.39295
X = 6.46+1.341*0.05=6.52305
