3.1

parameter, μ=401.3

Average enrollment in charter schools in Illinois. In 2014, there were 148 charter schools in the state of Illinois and the total number of students attending the charter schools was 59,388

μ

If X1,X2,X3, ..., XN are the N observations of a variable from a population, then the population mean is symbolized by

the sample mean would have more variability

If samples of size n=20 had been used instead of n=30, which of the following would be true?

the sample mean would have less variability (narrow)

If samples of size n=90 had been used instead of n=30, which of the following would be true?

the sample means would be centered at the same value

If samples of size n=90 had been used instead of n=30, which of the following would be true?

statistic, ^(p)=.90

Proportion of US adults who own a cell phone. In a survey of 1,006 US adults in 2014, 90% said they had a cell phone

statistic

What does one dot on the sampling distribution represent?

symmetric and bell-shaped

What shape do you expect the sampling distribution to have?

0.217

When 460 junior college students were surveyed, 100 said that they have previously owned a motorcycle. Find a point estimate for p, the population proportion of students who have previously owned a motorcycle

population parameter

Where should the sampling distribution be centered?