Question

Suppose a normal distribution has a mean of 50 and a standard deviation of 3. What is P(x≤53)?

- 0.16
- 0.025
- 0.84
- 0.975

Answer 1

Answer:

Step-by-step explanation:

Use the formula to find the z-score, then go to the table that will give you the probability that the value is less than this z-score.

$z=\frac{53-50}{3}=1$

The probability that the value lies to the left of 1 on a standard bell curve is 84.1345%, or 84%, the third choice down.