9.7k views
2 votes
I NEED SOMEONE TO CHECK MY WORK PLSS ASAP THANK YOU!!

I NEED SOMEONE TO CHECK MY WORK PLSS ASAP THANK YOU!!-example-1
User Pokoso
by
8.5k points

1 Answer

3 votes

Answer:

A. P(X ≤ 42) ≈ 0.2623

Explanation:

You want a shaded graph and the probability that X ≤ 42 for a normal distribution with μ = 49 and σ = 11.

Shading

The meaning of X ≤ 42 means values of x from -∞ to 42 are of interest. The graph will be shaded to the left of the point where X = 42.

Probability

The area of the normal curve that has this shading is found using the cumulative normal probability distribution function. A calculator gives the value as P(X ≤ 42) ≈ 0.2623. (Check your typing.)

<95141404393>

I NEED SOMEONE TO CHECK MY WORK PLSS ASAP THANK YOU!!-example-1
User Arjang
by
7.9k points

No related questions found