Question

a document issued by the legal arm of a large commercial airline states that, as of the end of last year, the airlines pilots had a population mean experience (the total flying time per pilot) of 3466 hours of flight with a population standard deviation of 839 hours.
a federal watchdog organization is tasked with checking the statement about the experience of the airlines pilots. the organization examined the flight records of a random sample of 35 of the airlines pilots. the pilots in the sample, at the end of last year, had a sample mean experience of 3342 hours with a sample standard deviation of 802 hours.
fill in the blanks below with the proper notation for the population mean, the population standard deviation, and the sample mean.
population mean: select = 3466 hours
population standard deviation: select = 839 hours
sample mean: select = 3342 hours

Explanation:

Step1: Recall population mean notation

The population mean is denoted by $\mu$.

Step2: Recall population standard deviation notation

The population standard deviation is denoted by $\sigma$.

Step3: Recall sample mean notation

The sample mean is denoted by $\bar{x}$.

Answer:

Population mean: $\mu = 3466$ hours
Population standard deviation: $\sigma = 839$ hours
Sample mean: $\bar{x}=3342$ hours