The distribution of how many hours an adult sleep at night is known to be symmetric and unimodal

Question

Jon Southam · Accepted Answer

Step 1: Find the z-score for x = 8.2 using the formula z = (x - μ) / σ, where x = 8.2, μ = 7.0,

The distribution of how many hours an adult sleep at night is known to be symmetric and unimodal with a mean of 7.0 hours and a standard deviation of 1.2 hours. Approximately what percent of adult's sleep more than 8.2 hours? 16% 5% 32% Almost 0%