![subject](/tpl/images/cats/mat.png)
Mathematics, 14.11.2019 02:31 melo2424
The burning rates of two different solid-fuel propellants used in aircrew escape systems are being studied. it is known that both propellants have approximately the same standard deviation of burning rate; that is sigma 1 equals sigma 2 equals 4 centimeters per second. two random samples of n 1 equals 20 and n 2 equals 20 specimens are tested; the sample mean burning rates are x overbar subscript 1 baseline equals 17 centimeters per second and x overbar subscript 2 baseline equals 25 centimeters per second. (a) test the hypothesis that both propellants have the same mean burning rate. use what is the p-value? (b) construct a 95% confidence interval on the difference in means (c) what is the beta-error of the test in part (a) if the true difference in mean burning rate is 2.5 centimeters per second? (d) assuming equal sample sizes, what sample size is needed to obtain power of 0.9 at a true difference in means of 4 cm/s?
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 14:00
The deck that kenneth is building is in the shape of a parallelogram abcd the measure of angle c is one third the measure of angle b find the measure of each angle of the deck
Answers: 2
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:30
When you flip a biased coin the probability of getting a tail is 0.6. how many times would you expect to get tails if you flip the coin 320 times?
Answers: 1
You know the right answer?
The burning rates of two different solid-fuel propellants used in aircrew escape systems are being s...
Questions
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 25.07.2019 21:50
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 25.07.2019 21:50
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 25.07.2019 21:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)