Roughly half of 18- to 29-year-olds (48%) say they have used an online dating site or app. This is according to a Pew Research Center survey conducted with 802 18- to 29-year-olds Oct. 16 to 28, 2019. The margin of error is 5.4 percentage points at the 95% confidence level.

45. (a) What percent of all 18- to 29-year-olds have used an online dating site or app?

(b) Are you 100% certain?

(c) If not, how confident are you?

46. If Pew Research Center surveyed 20,000 18- to 29-year-olds, would the margin of error be larger, smaller or remain the same?