Multiple Choice
The Post Office has established a record in a major Midwestern city for delivering 90% of its local mail the next working day.Calculate the standard deviation of the number delivered when 8 local letters are mailed.
A) .85
B) .72
C) 2.68
D) 2.83
Correct Answer:

Verified
Correct Answer:
Verified
Q28: The mean of the binomial distribution is
Q83: Historical data shows that the average number
Q84: The Securities and Exchange Commission has determined
Q85: Whenever p = .5,the binomial distribution will
Q87: Two characteristics/assumptions of the Poisson distribution include:<br>A)Probability
Q89: Of all individual tax returns,37% include errors
Q90: If X has the probability distribution <img
Q91: For a binomial process,the probability of success
Q92: Historical data for a local steel manufacturing
Q147: Determine the probability that a 3 will