There are 850 douglas fir and ponderosa pine trees in a section of forest bought by karamazov logging co. the company paid an average of $300 for each douglas fir and $225 for each ponderosa pine. if the company paid $217,500 for the trees, how many of each kind did the company buy?

Julia chooses a card at random from her set of cards. what is the probability that the card is labeled cat or hamster?

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.