Is 14 a prime number or a composite number
1 answer:
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Step-by-step explanation:
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Answer:
a) The average salary of firefighters in Portugal is $583.
b) The standard deviation of the salary of firefighters in Portugal is $319.8
Step-by-step explanation:
We are given the following in the question:
a) Standard Deviation, σ = $145.80
We are given that the distribution of salary of professor is a bell shaped distribution that is a normal distribution.
Formula:
A salary of $510.10 has a z-score of -0.50.
Putting values, we get,
Thus, the average salary of firefighters in Portugal is $583.
b) Mean, μ = $2,132
We are given that the distribution of salary of computer programmers is a bell shaped distribution that is a normal distribution.
Formula:
The salary of $2,291.90 has a z-score of +0.50
Putting values, we get,
Thus, the standard deviation of the salary of firefighters in Portugal is $319.8