Answer:
135
Step-by-step explanation:
The given expression is

From the question, x=5
So,by substitution,we obtain





Hence the answer is 135
Answer:
(75 × 12) + (3 × 580) = 2640
Step-by-step explanation:
Answer:
p(z<0.42) = 0.6628
Step-by-step explanation:
A normal distribution with a mean of 0 and a standard deviation of 1 is called a standard normal distribution. That is to say:
μ = 0
σ² = 1
Using a calculator, we find that:
p(z<0.42) = 0.6628 (See picture attached)