The table below lists the observed frequencies for all four categories for an experiment. Category Observed Frequency 1 23 2 15 3 31 4 11 The null hypothesis for the goodness-of-fit test is that 40% of all elements of the population belong to the first category, 30% belong to the second category, 20% belong to the third category, and 10% belong to the fourth category. What is the expected frequency for the fourth category