Mathematics, 13.08.2020 16:01, chjam265
A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from a height of inches, the company wants the mean height the balls bounce upward to be inches. This average is maintained by periodically testing random samples of tennis balls. If the t-value falls between and , then the company will be satisfied that it is manufacturing acceptable tennis balls. A sample of balls is randomly selected and tested. The mean bounce height of the sample is inches and the standard deviation is inch. Assume the bounce heights are approximately normally distributed. Is the company making acceptable tennis balls? Find and . nothing nothing
Answers: 2
Mathematics, 21.06.2019 16:00, Maria3737
An episode of a television show is 60 minutes long when it originally airs with commercials. on a dvd without commercials, the episode is only 417 minutes long. how many1-minute commercials did the episode include when it originally aired? write and solve an equation to justify your answer.
Answers: 2
Mathematics, 21.06.2019 19:40, nancy00
Aretha wanted to gather data about the cost of local bowling leagues in her area. she plotted the data and determined that the average bowling league costs consist of a one-time registration fee and a monthly fee modeled by the equation y = 15x + 20. identify and interpret the y-intercept in this model. the y-intercept is 20. this is the cost per month. the y-intercept is 20. this is the cost of registration. the y-intercept is 15. this is the cost of registration. the y-intercept is 15. this is the cost per month.
Answers: 1
A company manufactures tennis balls. When its tennis balls are dropped onto a concrete surface from...
Mathematics, 02.07.2020 03:01