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The proportion of female employees at large a airport is 48%. To identify the degree
of satisfaction and motivation, an employee attidute survey will be carried out. For
this purpose, 400 employees are randomly selected.
(a) How many males are expected to be in the random selection? What is the
(b) What is the probability that the random selection contains at least 50% males?
(c) The random sample has been drawn and contains 174 males (due to the large
population the difference between drawing with and without replacement can
be ignored). Use the σ-rules to decide whether is value is a plausible result.
What could in reality be the reason for this observation?