Acompany manufactures televisions in batches of 25 and there is a 1% rate of defects. find
the standard deviation for the number of defects per batch.
o 0.7
o 0.9
00.5
o 72.8

The standard deviation for the number of defects per batch is 0.5

In binomial distribution, standard deviation is given as:

Where "n" is the number of observations

"p" is probability of getting success

We are given that ,

Total batches of televisions : n = 25

The probability of defects : p = 1% = 0.01

Here success is getting defective batch

Then, the standard deviation for the number of defects per batch will be:

Plugging in values in formula, we get

Therefore, the standard deviation for the number of defects per batch = 0.5

ou would have 12 of each