The professional baseball season lasts from early April to the end of September. This table shows the batting averages of one team’s entire infield. Listed are the batting averages at the end of April and at the end of the season along with each player’s career average. Each player’s end-of-season average is much closer to his lifetime average than his April average. What is a good explanation for this?A)As the season goes on, the players wear down and their average drops. EliminateB)As the season goes on, the players get re-accustomed to playing and their average rises. C)The number of at-bats (trials) for each player is small at the end of April and not statistically meaningful. D)Fans, management, and media let a player know when his performance differs from what is expected and the player adjusts his performance accordingly.

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general 9 months ago 3909

The position function of an object moving along a straight line is given by s=f(t). The average velocity of an object over the time interval [a,b] is the average rate of change of f over [a,b]; it’s velocity at t=a is the rate of change of f at a.A ball is thrown straight up with an initial velocity of 144ft/sec, so that it’s height (in feet) after t sec is given by s=f(t)= 144t-16t^2.(A)What is the average velocity of the ball over the following time intervals?[3,4]= ft/sec[3,3.5]= ft/sec[3,3.1]= ft/sec(B) what is the instantaneous velocity at time t=3? Ft/sec(C) what is the instantaneous velocity at time t=8? Ft/sec(D) when will the ball hit the ground?

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general 9 months ago 1057

HLE ME ASAP!! 30 POINTS!!Given parallelogram PARK.Part I: Algebraically rotate parallelogram PARK counterclockwise 90° about the origin. List the coordinates of the image, parallelogram P'A'R'K'. In your final answer, show all of your work.Part II: Graphically rotate parallelogram PARK counterclockwise 90° about the origin. On your graph, label the following:1. parallelogram PARK and the coordinates of all four of its vertices2. parallelogram P'A'R'K' and the coordinates of all four of its vertices3. center of rotation and its coordinate4. the invisible circle of rotation, its radius and the length of the radius5. use arrows to show the counterclockwise movement of the parallelogram

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general 9 months ago 1027

Tessa is playing a game that uses a spinner. The spinner can land on red, yellow, green, purple, or orange. Tessa keeps track of the colors the spinner lands on. The game ends after 90 spins of the spinner. Tessa calculates the relative frequency of each color. Outcome Red Yellow Green Purple Orange Relative frequency 0.17 0.10 0.30 0.37 0.07 Which statement about Tessa's experiment is true? The outcomes do not appear to be equally likely, so a uniform probability model is a good model to represent probabilities in Tessa's experiment. The outcomes appear to be equally likely, so a uniform probability model is a good model to represent probabilities in Tessa’s experiment. The outcomes do not appear to be equally likely, so a uniform probability model is not a good model to represent probabilities in Tessa's experiment. The outcomes appear to be equally likely, so a uniform probability model is not a good model to represent probabilities in Tessa's experiment.

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general 9 months ago 4426