The lengths of phone calls to the receptionist of a small company are i. i.d. with a mean of 5 minutes and an sd of 8 minutes. a) find or approximate the chance that the total length of the next 250 calls is less than 20 hours. b) did you use the normal curve in your calculation in a? if so, which of the following did the curve represent and why? pick one and explain. (i) the the distribution of the lengths of the next 250 calls (ii) the probability distribution of the total length of the next 250 calls (iii) the observed distribution of the total length of the next 250 calls

Match the following terms with their definitions. 1. bisector of a segment ray ba and ray bc are opposite rays if a, b, and c are collinear and b (the endpoint of both rays) is between a and c. 2. opposite rays a ray, , is the set of points beginning at point a and going infinitely in the direction of point b. 3. collinear points a line or segment that intersects the segment at its midpoint. 4. betweenness of points a set of two or more points all on the same line. 5. ray the distance between the endpoints of a segment. 6. space point b is between a and c if a, b, and c are collinear and the equation ab + bc = ac is true, where ab, bc, and ac are the distances between points a and b, b and c, and a and c, respectively. 7. midpoint of a segment a set of two or more points all on the same plane. 8. coplanar points the point on a segment that divides the segment into two equal segments. 9. length of a segment the set of all possible points. 10. line segment the set of two different endpoints and all points between them.

Parks is wearing several rubber bracelets one third of the bracelets are tie-dye 1/6 are blue and 1/3 of the remainder are camouflage if parks wears 2 camouflage bracelets how many bracelets does he have on

Acylinder and its dimensions are shown. which equation can be used to find v, the volume of the cylinder in cubic centimeters?