A Stativtics probestoe has obterved that for several years shudents soore an average of 106
points out of 150 on the semester exam. A salesman suggests that he try a stassties sohware
package thal gets stidents thore lovolved with computers, predicting that a will increase students'
scoces. The soffware is expenshe, and the salosman oflers to let the prolfssor use it for a
semester io see the scores on the fral evam increase signilicantly. The prolessor will have to poy
for the sothware only it he chootes fo continie using it in the trial course that used this sottware,
242 thudents soored an overage of tof point on the final with a standard deviaton of 8.8 points.
Cemplete parts a) and b) below. a) Should the poolestor spend the money lor this sufware?
Support this reconnendition with an appropriale test Use a =0.05. What are the null and
alemative typotheces?.
A Stativtics probestoe has obterved that for several years shudents s.pdf
1. A Stativtics probestoe has obterved that for several years shudents soore an average of 106
points out of 150 on the semester exam. A salesman suggests that he try a stassties sohware
package thal gets stidents thore lovolved with computers, predicting that a will increase students'
scoces. The soffware is expenshe, and the salosman oflers to let the prolfssor use it for a
semester io see the scores on the fral evam increase signilicantly. The prolessor will have to poy
for the sothware only it he chootes fo continie using it in the trial course that used this sottware,
242 thudents soored an overage of tof point on the final with a standard deviaton of 8.8 points.
Cemplete parts a) and b) below. a) Should the poolestor spend the money lor this sufware?
Support this reconnendition with an appropriale test Use a =0.05. What are the null and
alemative typotheces?
