A company wants to know if a new TV commercial is increasing sales. Prior to the ad, average daily sales, measured in thousands, was $30. The population standard deviation is unknown. After the ad, 25 days of sales were measured. The average sales of the 25 days was $31 (in thousands) and the standard deviation was $5 (thousand). Conduct an appropriate statistical test using a = .05. Eight Steps of hypothesis testing 1. You only need to state which symbol goes in the alternate hypothesis (, or "not equal")? 2. 3. (you only need to put "directional" or "nondirectional" 4. Alpha = , n = (if there is more than one n, put "number, number"), df = 5. (just put the value, round to 2 digits; be sure to take a picture of your work and post it on the last question) 6. (just put the value, round to 2 digits) 7. (You only need to put "reject" or "fail to reject"