Mr. and Mrs. Ruel has 20 daughters and each daughter has one brother. How many people are in the Ruel family? Will give the answer in the comments after I get two responses also the first person to get it right will get brainliest

Astudy was conducted to determine the proportion of people who dream in black and white instead of color. among 306 people over the age of 55, 68 dream in black and white, and among 298 people under 25, 13 dream in black and white ( based on data from do we dream in color) we want to use a 0.01 significance level to test the claim that the proportion of people over 55 who dream in black and white is greater than the proportion of those under 25.