The mean salaries of flight attendants at two different airlines were compared. The following data summary was obtained: Airline 1 Airline 2 Sample sizes: 54 attendants 42 attendaants Sample means: $58,494 $55,855 Sample st. devs.: $3220 $3491 (a)Can it be concluded that mean salary is higher for Airline 1? Test at level 0.05. (b)Give a 99% C.I. for the true difference in mean salaries. (c)Give an approximate p-Value in (a) which does not use tables or integration