SOLUTION: 1. If the probability of a defective bolt is 0.1. Find
(a) the mean
(b) the standard deviation for the distribution if bolts in a total of 400.
2. Out of 800 families with fo
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Question 610764: 1. If the probability of a defective bolt is 0.1. Find
(a) the mean
(b) the standard deviation for the distribution if bolts in a total of 400.
2. Out of 800 families with four children each, how many families would expected to have:
(a) 2 boys and 2 girls
(b) atleast one boy
(c) no girl
(d) atmost two girls ?
Assuming equal probabilities for boys and girls.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Where 
is the sample size and 
is the probability of success on any individual trial.
For 
, we note that 
Just substitute the sample size if you have it or leave the answer as is if not.
)
Where is the sample size and is the probability of success on any individual trial.
Plug in your numbers and do the arithmetic.
John
My calculator said it, I believe it, that settles it
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