Statistical Sciences 2035 Study Guide - Midterm Guide: Null Hypothesis, Confidence Interval, Type I And Type Ii Errors
12 Oct 2013
School
Department
Professor
Document Summary
He will be retiring at the end of this season. The team has multiple options to replace him. However, the owner feels that signing a replacement is only justified, if he can average more than 22 points per game. The average waiting time per customer at a fast food restaurant has been 7. 5 minutes. The customer waiting time has a normal distribution. The manager claims that the use of a new cashier system will decrease the average customer waiting time in the store. Based on a random sample of 16 customer transactions, the mean waiting time is 6. 3 minutes and the standard deviation is 2 minutes per customer. What is the value of the test statistic we would use to test ho? t = -2. 4 t = -1. 2 t = -0. 6 t = 2. 4 z=-2. 4. Based on this information we can state that we have: made a type ii error, made a type i error, made a correct decision.
