The "unsinkable" luxury liner Titanic collided with an iceberg on her maiden voyage in 1912 and sank with great loss of life. Among the 1317 passengers on board, some had paid much higher fare than others. A not very subtle sub-text in the most recent Titanic movie was the notion that the first class passengers survived at a higher rate than other passengers. On Titanic, there were 324 first class passengers of whom 203 survived the sinking. Among the 285 second class passengers, 119 survived. Let m1 denote the survival rate of first class passengers and 72 denote the survival rate of second class passengers on any cruise liner if the cruise liner is capsized. 12. Using a 5% significance level, test whether the survival rate for first class passengers was greater than that for second class passengers (round to two decimal places). Write down the five steps of hypothesis testing and use the critical value approach for step 5