TC JUNI of the measures of the interior angles of a triangle is 76.
a) 180
(b) 90
(c) 270
(d) 360
The sum of the measures of interior angles of a pentagon is
77.
(a) 360°
(b) 450°
© 540°
(d) 720°
The sum of measures of the interior angles of an octagon =
78.
(a) 540°
(b) 720°
O 1080°
(d) 900°
The measure of the exterior angle of the equilateral triangle
79.
(a) 30
(b) 45
(c) 60
(d) 120
The measure of the interior angle of a regular pentagon
0.
(a) 140
(b) 108
(c) 120
(d) 135
How many sides has a regular polygon if the measure of each interior angle of it is 120° ?
1.
(a) 5
(b) 6
(c) 7
(d) 8​

You are in charge of the customer service phone line with many employees. at the end of each phone callthe customers are asked to rate their service from 1 to 5 stars, with 5 being the best. you find the averagerating for 20 randomly selected employees and decide you want to improve the ratings so you require thoseemployees to go through a new training program. you then wait a week and find the new average rating foreach employee. the average change is an increase in 1.3 stars with a standard devation of .9 stars.(a) is this data paired or not paired? (b) what are the null and alternative hypothesis being tested? (c) what is the t-statistic you would use? write the general formula and the final calculation.(d) sketch a t-distribution, label your t-statistic and the probability you would be interested in: