Statistics

Tennis Ball Manufacturing: A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from a height of 100 inches, the company wants the mean height of a ball’s bounce upward to be 55.5 inches. This average is maintained by periodically testing random samples of 25 tennis balls. If a 99% confidence level contains the desired bounce height (55.5 inches), the company will be satisfied that it is manufacturing acceptable tennis balls. A sample of 25 tennis balls is randomly selected and tested. The mean bounce height of the sample is 56 inches and the standard deviation is .25 inches. Is the company making acceptable tennis balls? Explain your reasoning.

I have listed the givens, but I'm confused as to where the book is getting the t value of 2.797. I also don't know what equation to use

  1. 👍 0
  2. 👎 0
  3. 👁 941
  1. No

    1. 👍 0
    2. 👎 1

Respond to this Question

First Name

Your Response

Similar Questions

  1. Physics

    You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 8.0 m/s. (a) How much time does it take for the tennis ball to reach its maximum

  2. Math

    The ratio of golf balls to tennis balls in the coach's bag is 20 to 5. If there are 100 golf balls in the bag, how many tennis balls are in the bag?

  3. physics

    the terminal velocity of a tennis ball is about 21 m/s. a tennis ball is dropped from a hot air balloon. how fast will it be moving after falling for 10 s? 21m/s, 77m/s, 9.8m/s, or 98m/s.

  4. Physics

    An animation is being created with a thousand tennis balls falling out of a truck, bouncing off the ground and each other. The animator wants to make the scene realistic but also wants to be efficient in the program. Which of

  1. Physics

    An animation is being created with a thousand tennis balls falling out of a truck, bouncing off the ground and each other. The animator wants to make the scene realistic but also wants to be efficient in the program. Which of

  2. math

    a can of tennis balls consists of three spheres stacked vertically inside a cylinder the balls just Touch the top, bottom, and sides of the cylinder. A diameter of each ball is 6.67 cm. find The Following. use 3.14 for pie and

  3. Manageral Economics (Economyst Only Please)

    Wilpen Company, a price-setting firm, produces nearly 80 percent of all tennis balls purchased in the United States. Wilpen estimates the U.S. demand for its tennis balls by using the following linear specifications: Q= a + bP +

  4. Physics

    If you simultaneously drop a pair of tennis balls from the top of a building, they strike the ground at the same time. If one of the tennis balls is filled with lead pellets, will it fall faster and hit the ground first? Which of

  1. i-ready mastery check

    Sally has 3 white tennis balls and 4 orange tennis balls. Drag a ratio into each box to represent the relationship between the two quantities. Answer choices may be used more than once. Not all answer choices will be used.

  2. Physics

    You toss a tennis ball straight upward. At the moment it leaves your hand it is at a height of 1.5 m above the ground, and it is moving at a speed of 7.8 m/s. (a) How much time does it take for the tennis ball to reach its maximum

  3. Physics

    During Service, a tennis ball is struck at height, h = 1.95 m, above a tennis court and moves with velocity Vo= Voxi. Assume the ball encounters no air resistance, and use a Cartesian coordinate system with the origin located at

  4. Physics

    A tennis player hits a 58.0g tennis ball so that it goes straight up and reaches a maximum height of 6.17m. How much work does gravity do on the ball on the way up? On the way down?

You can view more similar questions or ask a new question.