Math Problem Statement

A sample of 52 values is taken from a population that is normally distributed. You are doing a left-tailed test and the test statistic is χ²₅₁ = 35.548. Find the P-value for this hypothesis test.

Solution

To find the P-value for this left-tailed chi-square hypothesis test, we can follow these steps:

  1. Determine Degrees of Freedom: The degrees of freedom for this chi-square distribution is given as df=51df = 51.
  2. Given Chi-Square Value: The test statistic provided is χ512=35.548\chi^2_{51} = 35.548.
  3. Left-Tailed Test: Since this is a left-tailed test, we are interested in the probability P(χ235.548)P(\chi^2 \leq 35.548) for a chi-square distribution with 51 degrees of freedom.

Using a chi-square distribution table or calculator, we can find the cumulative probability up to the test statistic value for a chi-square distribution with 51 degrees of freedom.

The approximate P-value for χ2=35.548\chi^2 = 35.548 with df=51df = 51 is:

P0.9652P \approx 0.9652

Answer:

P-Value = 0.9652

Would you like a more detailed breakdown or have any questions?


Related Questions:

  1. How is the P-value interpreted in hypothesis testing?
  2. Why is it important to know if the test is one-tailed or two-tailed?
  3. What changes in interpretation if the test were right-tailed instead of left-tailed?
  4. How do degrees of freedom impact the shape of the chi-square distribution?
  5. What conditions must be met to use a chi-square test?

Tip:

When performing a chi-square test, always verify if it's one-tailed or two-tailed, as this affects how you calculate the P-value.

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Math Problem Analysis

Mathematical Concepts

Hypothesis Testing
Chi-Square Distribution
P-value Calculation

Formulas

P(χ² ≤ χ²₀) for left-tailed test

Theorems

Chi-Square Distribution Properties

Suitable Grade Level

College Statistics