Hypothesis Test Calculator

A hypothesis test calculator helps determine if there's enough statistical evidence to reject a null hypothesis. It calculates test statistics and p-values for z-tests and t-tests, enabling researchers and students to make data-driven decisions. This tool simplifies complex statistical calculations, ensures accuracy, and saves time in analyzing experimental results and survey data.

Formula

Z-test formula: Z = (X̄ - μ) / (σ/√n)
T-test formula: t = (X̄ - μ) / (s/√n)
Where X̄ = sample mean, μ = population mean, σ = population SD, s = sample SD, n = sample size

How to Use

1. Enter sample mean, population mean, standard deviation, and sample size
2. Select test type (Z-test or T-test)
3. Click Calculate to get test statistic and p-value
4. Compare p-value with significance level (α) to reject/fail to reject null hypothesis

Development Process

1. Designed user interface with HTML/CSS
2. Implemented statistical formulas in JavaScript
3. Added input validation and error handling
4. Tested with various scenarios
5. Optimized for mobile responsiveness
6. Added documentation and FAQs