Does having a baseball team in the World Series improve the overall mood of a city? A researcher collects individual mood reports from a sample of 150 Kansas City residents during the 2014 World Series. Her sample yields a mean of 77. She compares this to the average mood rating of cities of the same population. The average mood of city dwellers is 75 with a standard deviation of 17.

What is your sample z score?

(Round to the nearest hundredth- two decimal places)

What do you conclude? (Step 5)

What is the effect size?

(Round to the nearest hundredth- two decimal places)