Statistical Sciences 2035 Study Guide - Midterm Guide: Null Hypothesis, Confidence Interval, Type I And Type Ii Errors
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.