Airline fares for a flight from dallas to austin are $30 for first class and $25 for tourist class. if a flight had 52 passengers who paid a total of $1360, how many first class passengers were on the trip?

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

Triangle knm is what is true about the sides of knm