Suppose 70% of kids who visit a doctor have a fever, and 45% of kids with a fever have sore throats. what's the probability that a kid who goes to the doctor has a fever and a sore throat?
i am stuck on this question, sadly i just did a lot of these for my exams but i forget how to solve it. someone ? ?

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)