For the time series below, enter the 3-week moving average predictions (rounded to the nearest 0.01). then calculate the error and mse (careful to use unrounded figures for all week time series 3-ma error 1 5 2 13 3 7 4 9 5 18 6 16

Jeffery conducted a survey in his school and found that 30 of the 50 eighth grade students' favorite subject is mathematics. based on the results, jeffery concluded that out of the 200 students in his school, 120 students' favorite subject is mathematics. select the statement that is true about jeffery's conclusion. a. jeffery's conclusion is not valid because the sample was biased since only 200 students were surveyed. b. jeffery's conclusion is valid because the sample was random since all of the students were eighth grade students. c. jeffery's conclusion is valid because the sample was random. d. jeffery's conclusion is not valid because the sample was biased since all of the students were eighth grade students.

You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?

Put the equation in slope intercept form by solving for y