Sandra swims the 100-meter freestyle for her school's swim team. Her state's ranking system awards 3
points for first place, 2 points for second, I point for third, and 0 points if she does not place. Her coach
used her statistics from last season to design a simulation using a random number generator to predict
how many points she would receive in her first race this season.
Points Awarded
3
Integer Value
1-8
9-15
16 - 19
20
2
1
Frequency
20
12
6
2.
0

What is the games expected value of points earned for a turn?

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: