Quiz 2

Date: 01/31/2020


Write your name in the top-right corner of the page. You are not allowed any resources other than a standard scientific, non-graphing calculator.


Problem 1 (3 points):

In a Gallup poll of 1010 adults in the United States, 55% of the respondents said that they used local TV stations daily as a source of news. Is the 55% value a statistic or a parameter? Describe the sample. Describe the population.

Problem 2 (2 points):

Suppose we make an observation study to count how many geese live in Manzanita lake in UNR campus for at least 300 days of the year. What are the units of the observations? Are the units discrete or continuous?

Problem 3 (2 points):

An ad for Big Skinny wallets included the statement that one of their wallets “reduces your filled wallet size by 50%–200%.” What is wrong with that statement? How does it relate to the range of possible values of “size?”

Problem 4 (3 points):

Suppose we are making measurements of cars. Give one example of a quantitative measurement of the car and one example of a qualitative measurement of the car. Explain how these two types of measurements are different.