Find the probability that a randomly selected martian, aged 25 and over has completed four years of highschool only or is a male

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class

Amajor grocery store chain is trying to cut down on waste. currently, they get peaches from two different distributors, whole fruits and green grocer. out of a two large shipments, the manager randomly selects items from both suppliers and counts the number of items that are not sell-able due to bruising, disease or other problems. she then makes a confidence interval. is there a significant difference in the quality of the peaches between the two distributors? 95% ci for pw-pg: (0.064, 0.156)

One of the problems with our current election system is? ?