Math Problem Statement

Below is a graph of a normal distribution with mean μ = -2 and standard deviation σ = 3. The shaded region represents the probability of obtaining a value from this distribution that is greater than 1. Shade the corresponding region under the standard normal curve below.

Solution

The image shows a problem involving a normal distribution with mean μ=2\mu = -2 and standard deviation σ=3\sigma = 3. The shaded region represents the probability of obtaining a value greater than 1. You're asked to shade the corresponding region under the standard normal curve (a normal distribution with μ=0\mu = 0 and σ=1\sigma = 1).

Steps to approach this:

  1. Standardize the value: To find the corresponding region under the standard normal curve, we need to convert the value x=1x = 1 to a z-score using the formula: z=xμσz = \frac{x - \mu}{\sigma} For this problem: z=1(2)3=1+23=33=1z = \frac{1 - (-2)}{3} = \frac{1 + 2}{3} = \frac{3}{3} = 1 So, the z-score corresponding to x=1x = 1 in this distribution is z=1z = 1.

  2. Shade the region: In the standard normal distribution, you would shade the area to the right of z=1z = 1. This represents the probability of obtaining a value greater than 1 in the standard normal curve.

In the bottom graph, you need to shade the area from z=1z = 1 to the right.

Would you like further details on how to calculate or interpret this probability?

Related questions:

  1. What is the total area under a standard normal curve?
  2. How do we interpret z-scores in real-world problems?
  3. How can we use z-tables to find probabilities for normal distributions?
  4. What is the probability of obtaining a value greater than 1 in this specific distribution?
  5. How can you use the empirical rule to estimate probabilities in normal distributions?

Tip:

Remember that the total area under any normal distribution curve equals 1, representing the total probability.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Normal Distribution
Standard Normal Distribution
Probability

Formulas

z = (x - μ) / σ

Theorems

Central Limit Theorem
Properties of Normal Distributions

Suitable Grade Level

Grades 10-12 or College