Aproduct that has a negative income elasticity of demand is good

The questions of economics address which of the following ? check all that apply

Ernesto baca is employed by bigg company. he has a family membership in his company's health insurance program. the annual premium is $5,432. ernesto's employer pays 80% of the total cost. ernesto's contribution is deducted from his paycheck. what is his annual contribution? $1,086.40 $1,125.65 $1,527.98 $1,567.20 save and exit

What can be concluded from the data about the reliability and validity of the thermometers