In a city, about 60% of all residents have received a COVID-19 vaccine. Suppose that a random sample of 18 residents is selected. Part A Calculate the probability that exactly 9 residents have received a COVID-19 vaccine in the sample. (Round the probabilities to 4 decimal places if possible) Part B Calculate the probability that at most 9 residents have received a COVID-19 vaccine in the sample. (Round the probabilities to 4 decimal places if possible) Part C Calculate the probability that at least 9 residents have received a COVID-19 vaccine in the sample. (Round the probabilities to 4 decimal places if possible) Part D Calculate the expected number of residents who have received a COVID-19 vaccine in the sample. (Round the expected value to 4 decimal places if possible) Part E Calculate the standard deviation of the number of residents who have received a COVID-19 vaccine. (Round the standard deviation to 4 decimal places if possible)
In a city, about 60% of all residents have received a COVID-19 vaccine. Suppose that a random sample of 18 residents is selected. Part A Calculate the
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