A manufacturer produces widgets that are packaged in boxes of 100. The probability of a widget being defective is 0.021. Find the mean and standard deviation for the number of defective widgets in a box.

Step-by-step explanation:

From the question we are told that:

Sample size

Probability of  a defective widget

Generally the equation for binomial trial is mathematically given by

Since X is binomial random variable with functions of n and p,The equation of mean \=x

  Where

Generally the equation for variance \sigma is mathematically given by

step-by-step explanation:   divide the numerator by the denominator to get the decimal

it would still be 193

if divide by 100 then 1.93

i am not sure

tip $2.90

total $17.40