Nicole shines a light from a window of a lighthouse on a 250 feet above the water level. Nick, 10 feet above the water level in a ship offshore, finds that the angle of elevation of the light is . Find the length of the line of sight (light beam) from the ship 3 degrees to Nicole Round to the nearest tenth

2people are trying different phones to see which one has the better talk time. chatlong has an average of 18 hours with a standard deviation of 2 hours and talk-a-lot has an average of 20 hours with a standard deviation of 3. the two people who tested their phones both got 20 hours of use on their phones. for the z-scores i got 1 for the chatlong company and 0 for talk-a-lot. what is the percentile for each z-score?