Ithink its a
a scientist selects 400 people who snore at night to test how many hours they actually snore. the average length of time is, surprisingly, only 4.2 hours. what kind of study is this?

sample survey
experimental study
double-blind study
observational study

Which expression calculates the speed in meters per second of an object that travels a distance of 100 m every 20 seconds

Asquare is dilated by a scale factor of 1.25 to create a new square. how does the area of the new square compare with the area of the original square? a)the area of the new square is 1.25 times the area of the original square. b)the area of the new square is 2.50 times the area of the original square. c)the area of the new square is 1.252 times the area of the original square. d)the area of the new square is 1.253 times the area of the original square.

The frequency table shows a set of data collected by a doctor for adult patients who were diagnosed with a strain of influenza. patients with influenza age range number of sick patients 25 to 29 30 to 34 35 to 39 40 to 45 which dot plot could represent the same data as the frequency table? patients with flu