Answer: 390 miles
Step-by-step explanation:
Let x be the lengths of the steel rods and X ~ N (108.7, 0.6)
To get the probability of less than 109.1 cm, the solution is computed by:
z (109.1) = (X-mean)/standard dev
= 109.1 – 108/ 0.6
= 1.1/0.6
=1.83333, look this up in the z table.
P(x < 109.1) = P(z < 1.8333) = 0.97 or 97%
Answer:
136
Step-by-step explanation:
-4 to 10 is 14
14/2=7 each number on top gets multiplied by 7 then subtracted by 4
so 20*7=140-4 136