Math Problem Statement

For a standard normal distribution, find: P(z > 0.07) Express the probability as a decimal rounded to 4 decimal places.

Solution

To solve this problem, you are asked to find the probability for a standard normal distribution where:

P(z>0.07)P(z > 0.07)

Steps to solve:

  1. Standard Normal Distribution: This refers to a normal distribution with a mean of 0 and a standard deviation of 1.

  2. Find the z-value: The z-value here is 0.07. We need to calculate the probability that z>0.07z > 0.07.

  3. Use the z-table or a calculator: A z-table provides the probability that zz is less than a particular value. To get P(z>0.07)P(z > 0.07), we first find P(z<0.07)P(z < 0.07) from the z-table, then subtract that value from 1.

  4. Look up P(z<0.07)P(z < 0.07) in the standard normal table. For z=0.07z = 0.07, the value is approximately 0.5279.

  5. Calculate P(z>0.07)P(z > 0.07): P(z>0.07)=1P(z<0.07)=10.5279=0.4721P(z > 0.07) = 1 - P(z < 0.07) = 1 - 0.5279 = 0.4721

So, the probability P(z>0.07)P(z > 0.07) is approximately 0.4721 when rounded to 4 decimal places.

Would you like further details or have any questions?

Related Questions:

  1. What is the probability for P(z>1.5)P(z > 1.5)?
  2. How do you calculate P(z<0.5)P(z < -0.5) in a standard normal distribution?
  3. What does a negative z-value represent in a standard normal distribution?
  4. How would you find P(z>2.5)P(z > 2.5)?
  5. Can you explain why the total area under a standard normal curve is 1?

Tip: When solving problems with a standard normal distribution, always remember that the total probability adds up to 1, and use symmetry of the curve when calculating probabilities for negative z-values.

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Math Problem Analysis

Mathematical Concepts

Statistics
Probability
Standard Normal Distribution

Formulas

P(z > 0.07) = 1 - P(z < 0.07)
Standard Normal Distribution: mean = 0, standard deviation = 1

Theorems

Standard Normal Distribution properties
Z-table usage

Suitable Grade Level

Grades 11-12 or College