Leaving Cert Maths - How to Calculate P-Value and Z-Score (Hypothesis Testing)

Описание: Struggling with Hypothesis Testing? In this video, we break down one of the trickiest parts of the Leaving Cert Higher Level Maths curriculum: P-values and Z-scores.

Using a real exam-style question (LCHL 2025 Paper 2), we walk through:

How to identify the Null (H0) and Alternative (H1) Hypotheses.

Choosing the right Z-score formula from your log tables.

Calculating the test statistic for a sample mean.

Determining the P-value and making a final statistical conclusion.

Whether you're prepping for mocks or the final exam, this step-by-step guide makes complex statistics easy to understand. Don't forget to like, subscribe, and share with your classmates!

0:00 Introduction to P-Value and Hypothesis Testing

0:20 Analyzing the Sample Data Table

0:45 Defining the Null and Alternative Hypothesis

1:55 Finding the Z-Score Formula in Log Tables

2:20 Calculating the Z-Score Step-by-Step

3:05 What is a P-Value?

5:00 Calculating the P-Value from the Z-Score

6:43 Understanding the 5% Significance Threshold

7:10 Final Conclusion: Reject or Fail to Reject?

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