Math Problem Statement

Find the area of the indicated region under the standard normal curve. -1.6-0.6

Solution

To find the area under the standard normal curve between z=1.6z = -1.6 and z=0.6z = -0.6, we need to use the cumulative distribution function (CDF) of the standard normal distribution, which provides the area to the left of any given zz-value.

Steps:

  1. Find the area to the left of z=1.6z = -1.6 using the standard normal table (or a calculator with the normal distribution function): P(Z<1.6)0.0548P(Z < -1.6) \approx 0.0548
  2. Find the area to the left of z=0.6z = -0.6: P(Z<0.6)0.2743P(Z < -0.6) \approx 0.2743
  3. Calculate the area between z=1.6z = -1.6 and z=0.6z = -0.6 by subtracting the two areas: Area=P(Z<0.6)P(Z<1.6)=0.27430.0548=0.2195\text{Area} = P(Z < -0.6) - P(Z < -1.6) = 0.2743 - 0.0548 = 0.2195

Thus, the area under the standard normal curve between z=1.6z = -1.6 and z=0.6z = -0.6 is approximately 0.2195.

Would you like further details on any part of this calculation?

Here are 5 related questions to explore:

  1. How can you calculate the area under the normal curve for any range?
  2. What is the significance of a standard normal distribution in statistics?
  3. How can technology (calculators, software) simplify finding areas under normal curves?
  4. What are zz-scores, and why are they important in standard normal distributions?
  5. How do we interpret the area under the curve in real-world contexts?

Tip: When using the standard normal table, remember that it provides the cumulative probability from -\infty to the zz-value.

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Math Problem Analysis

Mathematical Concepts

Statistics
Standard Normal Distribution
Probability

Formulas

Cumulative Distribution Function (CDF) for standard normal distribution
Area between two z-scores: P(Z < z2) - P(Z < z1)

Theorems

Properties of the Standard Normal Distribution

Suitable Grade Level

Grades 10-12