1.According to the Centers for Disease Control, about 36% of U. S. adults were obese in 2013. To see if that has changed since the last study, a random sample of 250 U. S. adults will be
checked.
a. Describe the sampling distribution model for the sample proportion (assuming no change
in obesity rates) by naming the model and telling its mean and standard deviation. Justify
your answer.
b. Sketch and clearly label the model.
c. What is the probability that in this group less than 25% of the adults will be found to be
obese?

Okay so for every triangle has three angles that always add up to 180 degrees. and to tell the difference between whether they are secure, right or obtuse is that acute: has one angle that is less than 90 degrees. right triangle means there is at least one angle that is exactly 90 degrees. and an obtuse angle has an angle that is bigger than 180 degrees. i’ll do #13 as an example: 13. 40 and 50 so if every triangle has 180 degrees 40+50= 90 degrees then180-90= 90 degrees so the third angle is 90 degrees and because this triangle has a 90 degree angle it means it is a right triangle