Question

The National Safe Driving Association has just hired you to conduct research on the prevalence of severe binge drinking among teens. You have created a scale ranging from 0 to 14 measuring the number of times teens drank 10 or more alcoholic beverages in a single sitting in the past 2 weeks. The average severe binge drinking score for your sample of 100 teens is 1.27, with a standard deviation of 0.80.

What is the research variable being studied? Level of measurement of the research variable?

The research variable that is being studied is the teens. And the LOM is nominal.     are the two of these correct??

You are the automotive specialist for the monthly magazine Consumer Beware. Part of your job is to investigate claims made by automakers in their TV commercials. You are particularly suspicious of a new economy car that the automaker claims will get 78 miles/gallon. After checking the mileage figures for a random sample of 70 car owners, you find average miles per gallon is 75.5 with a standard deviation of 3.7.

1. What is the research variable being studied? Level of measurement of the research variable?

The research variable being studied is automakers in tv commercials. The LOM is nominal.

are the two of these correct??

Answer 1

First question:

Teens are subjects under study and variable that is being studied is " number of times teens drank 10 or more alcoholic beverages in a single sitting in the past 2 weeks". In short variable that is being studied is " binge drinking score ".

The level of measurement is ratio.

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Second question:

Car owners are subjects under study. The variable that is being studied is mileage.

The level of measurement is ratio.