A strength training program was administered to a population of marine recruits. The change in number of push-ups completed between the beginning and end of the program was approximately normally distributed with a mean improvement of 7.2 with a standard deviation of 2.5. What is the probability that a sample of 25 recruits will have a mean improvement of less than 8 push-ups? Round your answer to 3 decimal places.

Coral reefs,temperate grasslands, and kelp forests are all in danger.

First locate the turning point (vertex) of the graph. which is at the coordinates x=5 and y=9 or (5; 9).to determine whether it's a maximum or mininum value, you have to discern whether the vertex's y-value is the highest value or lowest value the graph can reach. since the vertex's y-value, 9 is the highest value the graph can reach, it will be a maximum.another basic way to determine whether the vertex's value is max or min is to see if the graph is smiling or sad. if it's smiling, the turning point/vertex would be a minimum, while a sad parabola would have a maximum y-value at the vertex.