The answer should be E. 223- 6s = 0
7.8456 x 10^(-4)
this means you move the decimal place to the left 4 places to get the actual value
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:
Let x be the number;
We solve the equation x ÷ 4 - 5 = 15;
Then x ÷ 4 = 20;
Finally x = 80;
Step-by-step explanation: