a) 280 -250 divided by z = 1.2
Use a z- table to find the probability greater than z = 1.2
If the mean wage of a part time lecturer in a college is 250.00 per month and standard deviation of 25.00.find these probabilities for a randomly selected lecturer,assuming the variable is normally distributed,
a.the lecturer earns more than 280.00.
b.the lecturer earns more than 200.00.
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