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At a local blood bank, the daily number of type AB donations follows a binomial distribution with n=1000 and p=0.04. (a) What is the mean

At a local blood bank, the daily number of type AB donations follows a binomial distribution with n=1000 and p=0.04.

(a) What is the mean number of daily AB donations?

(b) What is the standard deviation of the number daily AB donations? (Please round to 3 decimals.)

(c) Use a normal approximation to estimate the probability that there will be fewer than 30 AB donations in one day. (Please round to 4 decimals.)

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