Inches to cm Conversion (Inches To Centimeters) - Inch Calculator

Centimeter Definition, Symbol & Conversion

NEEWER 43 Inch/110 Centimeter Light Reflector Diffuser 5 in 1 Collapsible Multi Disc with Bag - Translucent, Silver, Gold, White, and Black for Studio Photography Lighting Outdoor

Feet and Inches Calculator

Everyone believes that the average height of people in your building is 67 inches. You don't know the variance. You want to check this, so you survey 100 people. You read in a science magazine that the variance for human height is 4 inches (and, of course, a 2-inch standard deviation). When you take your survey, you observe a mean of 68. Is this a statistically significant difference? What's the p-value?