Mathematics, 30.07.2019 04:10 fy1lqjh
The burning rates of two different solid-fuel propellants usedin aircrew escape systems are being studied. it is known that bothpropellants have approximately the same standard deviation ofburning rate; that is α1 = α 2 = 3 centimeters persecond. two random samples of n1 = 20 and n2 = 20 specimensare tested; the sample mean burning rates are 1 = 18 centimeters per second and 2 = 24 centimeters per second.
(a) test the hypothesis that both propellants have the samemean burning rate. use α= 0.05. what is thep-value?
(b) contruct a 95% confidence interval on the difference inmean s μ1 - μ2. what is the practical meaning of thisinterval?
(c) what is the β-error of the test in part (a) if thetrue difference in mean burning rate is 2.5 centimeters persecond?
(d) assuming equal sample sizes, what sample size is needed toobtain power of 0.9 at a true deifference in means of14cm/s?
Answers: 3
Mathematics, 21.06.2019 18:30, victoria6929
Which of the choices shown could be used to prove that aacp=abcp ?
Answers: 1
Mathematics, 22.06.2019 00:30, vanitycarraway2000
Intro biblioteca sunt 462 de carti cu 198 mai putine enciclipedii si cu 47 mai multe dictionare decat enciclopedii cate enciclopedii sunt in biblioteca
Answers: 1
The burning rates of two different solid-fuel propellants usedin aircrew escape systems are being st...
Mathematics, 10.03.2021 05:00
Chemistry, 10.03.2021 05:00
Mathematics, 10.03.2021 05:00
Mathematics, 10.03.2021 05:00
English, 10.03.2021 05:00
Mathematics, 10.03.2021 05:00
History, 10.03.2021 05:00
Mathematics, 10.03.2021 05:00