![subject](/tpl/images/cats/mat.png)
Mathematics, 27.02.2020 05:22 fermaluis8015
A large manufacturing plant uses lightbulbs with lifetimes that are normally distributed with a mean of 1200 hours and a standard deviation of 60 hours. To minimize the number of bulbs that burn out during operating hours, all bulbs are replaced at once. How often should the bulbs be replaced so that no more than 1% burn out between replacement periods? (Round your answer to one decimal place.)
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:00
What are the solutions of the equation? z^2 + 11z + 24 = 0 a. 8, -3 b. 8, 3 c. -8, -3 d. -8, 3
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:40
The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 02:00
An isosceles trapezoid with a perimeter of 42 inches. each of the congruent non parallel sides is 5 inches long, and the trapezoid is 3 inches tall. how long are the two parallel sides? a. 10 in, 22 in b. 16 in, 16 in c. 10 in, 16 in d. 12 in, 20 in
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 06:20
Which statement regarding efg are true? check all that apply
Answers: 3
You know the right answer?
A large manufacturing plant uses lightbulbs with lifetimes that are normally distributed with a mean...
Questions
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 30.08.2019 17:30
![question](/tpl/images/cats/himiya.png)
Chemistry, 30.08.2019 17:30
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/health.png)
Health, 30.08.2019 17:30
![question](/tpl/images/cats/himiya.png)
Chemistry, 30.08.2019 17:30
![question](/tpl/images/cats/en.png)
English, 30.08.2019 17:30
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 30.08.2019 17:30
![question](/tpl/images/cats/biologiya.png)
Biology, 30.08.2019 17:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 30.08.2019 17:30
![question](/tpl/images/cats/mat.png)
Mathematics, 30.08.2019 17:30
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)