The 5 participants in a 200-meter dash had the following finishing times in seconds). 25, 26, 30, 28, 26
Assuming that these times constitute an entire population, find the standard deviation of the population. Round your answer to two decimal places

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

Aprofessional hockey team has noticed that, over the past several seasons, as the number of wins increases, the total number of hot dogs sold at the concession stands increases. the hockey team concludes that winning makes people crave hot dogs. what is wrong with the hockey team's conclusion? a) it does not take into account the attendance during each season. b) it does not take into account the number of hamburgers sold during each season. c) it does not take into account the number of concession stands in the hockey arena. d) it does not take into account the number of seasons the hockey team has been in existence.

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)