The following data set represents the average number of minutes played for a random sample of professional basketball players in a recent season.
35.9 33.8
34.7
31.5
33.2 29.1
30.7 31.2 36.1 34.9
a) Find the sample mean and sample standard deviation.
b) Construct a 90% confidence interval for the population mean and interpret the
results. Assume the population of the data set is normally distributed.
c) Repeat part (b), assuming the population standard deviation is 5.25 minutes per
game. Interpret and compare the results.

hello! just here for points! though i wish i knew!

1. 180°. the sum of the interior angles of a triangle is 180°, for the equilateral triangle that it has three equals side is 60°+60°+60°=180°.

2. 60°. each interior angle of a equilateral triangle is 60°

3. 120°. the measure of ∠m is 120°, the sum of the angles ∠m and ∠n is equal to 180°. so, in order to find the measure of ∠m, we have ∠m+∠n=180° > ∠m=180°-∠n > ∠m=180°-60°=120°.

4. 360°. the sum of the exterior angles of an equilateral triangle is ∠m+∠r+∠x=120°+120°+120°=360°. the exterior angles of any triangle always add 360°.

is the anwser b. (-13)?