Describe how a piecewise function can be more useful in real-world scenarios as opposed to a singular linear or non-linear function. Provide your own example of a real-life scenario. Include algebraic and graphical representations in addition to a verbal description

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%

Mackenzie needs to determine whether the rectangles are proportional. which process could she use? check all that apply.

The length of time it takes to find a parking space at 9 a. m. follows a normal distribution with a mean of 5 minutes and a standard deviation of 2 minutes. find the probability that it takes at least 8 minutes to find a parking space. (round your answer to four decimal places.)