The probability that a newborn baby does not cry after midnight is 2/50. The probability that a newborn baby cries once after midnight is 11/50. The probability that a newborn baby cries twice after midnight is 23/50. The probability that a newborn baby cries thrice after midnight is 9/50. The probability that a newborn baby cries for 4 times after midnight is 4/50. The probability that a newborn baby cries for 5 times after midnight is 1/50. a. Find the expected value of the number of times a newborn baby’s crying wakes its mother after midnight. (The expected value is the expected number of times per week a newborn baby’s crying wakes its mother after midnight.) b. Calculate the variance and standard deviation of the variable.
The
a. Find the
b. Calculate the variance and standard deviation of the variable.
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