![subject](/tpl/images/cats/mat.png)
Mathematics, 04.08.2019 00:30 kate712
The mean life of a particular brand of light bulb is 1200 hours. if you know that at about 95% of this brand of bulbs will last between 800 and 1600 hours, then what is the standard deviation of the light bulbs' life?
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:30
Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:10
Identify the initial amount a and the growth factor b in the exponential function. a(x)=680*4.3^x
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:00
Charlie tosses five coins.what is the probability that all five coins will land tails up.
Answers: 2
You know the right answer?
The mean life of a particular brand of light bulb is 1200 hours. if you know that at about 95% of th...
Questions
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.12.2019 10:31
![question](/tpl/images/cats/istoriya.png)
History, 14.12.2019 10:31
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.12.2019 10:31
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.12.2019 10:31
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 14.12.2019 10:31
![question](/tpl/images/cats/mat.png)
Mathematics, 14.12.2019 10:31
![question](/tpl/images/cats/mat.png)
Mathematics, 14.12.2019 10:31
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.12.2019 10:31