Read the following scenario and answer parts aSolutionPart a

Read the following scenario and answer parts a

Solution

Part (a). The population is all US college students.

Part (b). The sample is the 364 college students randomly selected.

Part (c). One statistic is the sample mean score of 124.   The usual symbol for that is x-bar.

The sample standard deviation of 23.5 is another statistic, denoted by s or s_x .

Part (d). One Parameter is the mean score of 115 for all US college students, which is usually denoted by a Greek letter mu.   Another parameter is the standard deviation of 30 for all US college students, denoted by a Greek lower case sigma.