I need help no really what is 100+100 (100 points if you can tell me)

What’s the ratio in simplest form if you count 14 robins out of 150 birds

Can someone me out here number 4 plz

In a survey of 1015 adults, a polling agency asked, "when you retire, do you think you will have enough money to live comfortably or not. of the 1015 surveyed, 534 stated that they were worried about having enough money to live comfortably in retirement. construct a 90% confidence interval for the proportion of adults who are worried about having enough money to live comfortably in retirement.