State whether the quantity we can obtain/calculate from the given information is a statistic or parameter. Identify/calculate and express the value being sought using the correct notation (e.g. μ = 4). Pay close attention to whether you are given information on a sample or the population. a) Mean number of cell phone calls made or received per day by cell phone users. In a survey of 1,917 cell phone users, the mean was 13.10 phone calls a day. b) 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. c) Proportion of families in the US who were homeless in 2010. The number of home- less families in 2010 was about 170,000 while the total number of families is given in the US is 78 million.
State whether the quantity we can obtain/calculate from the given information is a
statistic or parameter. Identify/calculate and express the value being sought using the
correct notation (e.g. μ = 4). Pay close attention to whether you are given information
on a sample or the population.
a) Mean number of cell phone calls made or received per day by cell phone users. In
a survey of 1,917 cell phone users, the mean was 13.10 phone calls a day.
b) 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.
c) Proportion of families in the US who were homeless in 2010. The number of home-
less families in 2010 was about 170,000 while the total number of families is given in
the US is 78 million.
d) 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.
e)
Unit. Data from 200 patients gives a correlation of 0.037.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
