Genovia has experienced exceptional growth. It's income or GDP per capita has increased from $30,000 to $50,000 within the last 5 years. Over this period, the quantity demanded for public
transport has decreased from 10.000 bus rides to 7.000 bus rides. Please calculate the income elasticity of demand and determine whether public transportation is a inferior, luxury or normal good
a 2.22 (positive) - normal
0.45 (positive) - normal
-0.45 (negative) - Inferior

At cooly cola, we are testing the appeal of our new diet one cola. in a taste test of 250 randomly chosen cola drinkers, 200 consumers preferred diet one cola to the leading brand. assuming that the sample were large enough, the large-sample 95% confidence interval for the population proportion of cola drinkers that prefer diet one cola would be:

The management of a supermarket wants to adopt a new promotional policy of giving a free gift to every customer who spends > a certain amount per visit at this supermarket. the expectation of the management is that after this promotional policy is advertised, the expenditures for all customers at this supermarket will be normally distributed with a mean of $95 and a standard deviation of $20. if the management wants to give free gifts to at most 10% of the customers, what should the amount be above which a customer would receive a free gift?

Only the united states has embassies. true or false