PLEASE ANSWER
The mean lifespan of a light bulb manufactured by a company is 400 days with a s...
![subject](/tpl/images/cats/mat.png)
Mathematics, 14.04.2020 19:39 liapis2002
PLEASE ANSWER
The mean lifespan of a light bulb manufactured by a company is 400 days with a standard deviation of 65 days. Assuming that bulb lifespan is a normally distributed random variable, what is the probability that a light bulb manufactured by this company will last at most 270 days?
![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)
Mathematics, 21.06.2019 22:30
Reinel saves 30% of every pay check. his paycheck last week was 560$. how much did reniel save last week?
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:00
The equation of a parabola is given. y=18x2+4x+20 what are the coordinates of the focus of the parabola?
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 02:30
Ineed on these fraction questions! could'ya me? 1. 3/8 ( ? ) 0.295 a. = b. > c. < 2. -0.770 ( ? ) -4/5 a. = b . < c. >
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 02:30
How many degrees are there in the central angles in a circle
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 03.09.2020 07:01
![question](/tpl/images/cats/mat.png)
Mathematics, 03.09.2020 08:01
![question](/tpl/images/cats/fizika.png)
Physics, 03.09.2020 08:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.09.2020 08:01
![question](/tpl/images/cats/ap.png)
Advanced Placement (AP), 03.09.2020 08:01
![question](/tpl/images/cats/mat.png)
Mathematics, 03.09.2020 08:01
![question](/tpl/images/cats/health.png)
Health, 03.09.2020 08:01
![question](/tpl/images/cats/fr.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 03.09.2020 08:01
![question](/tpl/images/cats/istoriya.png)
History, 03.09.2020 08:01
![question](/tpl/images/cats/mat.png)
Mathematics, 03.09.2020 08:01
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/fizika.png)
Physics, 03.09.2020 08:01
![question](/tpl/images/cats/mat.png)
Mathematics, 03.09.2020 08:01
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 03.09.2020 08:01
![question](/tpl/images/cats/istoriya.png)
History, 03.09.2020 08:01
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
English, 03.09.2020 08:01