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Mathematics Clinic => Statistics => Topic started by: Capo on Jan 16, 2020

Title: A recent survey found that 72% of all adults over 50 own cell phones. You randomly select 31 adults ...
Post by: Capo on Jan 16, 2020

A recent survey found that 72% of all adults over 50 own cell phones. You randomly select 31 adults over 50, and ask if he or she owns a cell phone. Decide whether you can use the normal distribution to approximate the binomial distribution. If so, find the mean and standard deviation, If not, explain why. Round to the nearest hundredth when necessary.

Title: A recent survey found that 72% of all adults over 50 own cell phones. You randomly select 31 adults ...
Post by: anyusername12131 on Jan 16, 2020

use normal distribution, μ = 22.32 and σ = 2.5.