One researcher wants to determine whether the number of minutes adults spend online per day is related to gender. A random sample of 315 adults was selected and the results are shown below. Calculate the chi-square test statistic to determine if there is enough evidence to conclude that the number of minutes spent online per day is related to gender? Minutes spent online per day
Gender 0-30 30-60 60-90 90+
Male 25 35 75 45
Female 30 45 45 15