![subject](/tpl/images/cats/mat.png)
Mathematics, 25.11.2020 14:00 kmchippps
Johnson Electronics Corporation makes electric tubes. It is known that the standard deviation of the lives of these tubes is 140 hours. The company’s research department takes a sample of 110 such tubes and finds that the mean life of these tubes is 2100 hours.
Required:
What is the probability that this sample mean is within 24 hours of the mean life of all tubes produced by this company?
![ansver](/tpl/images/cats/User.png)
Answers: 3
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 22:00
Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:00
John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:20
Given: jk ||lm prove: _2 = 27 statement justification 1. jk ||lm 1. given 2.26 = 27 3.22 = 26 2. 3. 4. _2 = 27 4. corresponding angles theorem transitive property of equality vertical angles theorem substitution property of equality
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:30
The nth term of a sequence in 2n-1 the nth term of a different sequence is 3n+1 work out 3 numbers that are in bothe sequences and are between 20 and 40
Answers: 2
You know the right answer?
Johnson Electronics Corporation makes electric tubes. It is known that the standard deviation of the...
Questions
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
History, 26.08.2019 16:30
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 26.08.2019 16:30
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 26.08.2019 16:30
![question](/tpl/images/cats/fizika.png)
Physics, 26.08.2019 16:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 26.08.2019 16:30
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/es.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
History, 26.08.2019 16:30