The following ten observations are a sample drawn from a normal population: 25, 20, 18, -5, 35, 21, -11, 8, 20, and 9. The mean of the sample is closest to:

[单选题]The following ten observations are a sample drawn from a normal population:

[单选题]The following 10 observations are a sample drawn from a normal population:

[单选题]The following 10 observations are a sample drawn from an approximately norm

[单选题]The following ten observations are a sample drawn from an approximately nom

[单选题]The following 10 observations are a sample drawn from an approximately norm

[单选题]Using the following sample results drawn as 25 paired observations from the

[单选题]A sample of 100 observations drawn from a normally distributed population h

[单选题]Using the following sample results drawn as 25 paired observations fTom the

[单选题]Using the sample results given below, drawn as 25 paired observations from

[单选题]A sample of 438 observations is randomly selected from a population. The me