The physical fitness score for a population of police officers at a local police station is 85, with a standard deviation of 8 on a 100-point physical endurance scale. Suppose the police chief selects a sample of 52 local police officers from this population and records a mean physical fitness rating on this scale equal to 89. He conducts a one-sample z test to determine whether physical endurance significantly increased at a .05 level of significance (do not use SPSS) (6 pts). i. List and explain the 5 steps of hypothesis testing; what conclusion do you arrive at? ii. Compute effect size using Cohen's d.