Question

11. Solve the problem. (I point) A company manufactures televisi the standard deviation for the number of defects per batch ons in batches of 25 and there is a 1% rte of defects. Find O 0.7 0.9 00.5 O72.8

Answer 1

Given n= 25

Proportion of defects p= 0.01

Standard deviation of number of defects per batch is

$\sigma= \sqrt{n*p*(1-p)}$

$\sigma= \sqrt{25*0.01*(1-0.01)}$

$\sigma= 0.4975$

So standard deviation = 0.5

Ans: 0.5