![subject](/tpl/images/cats/mat.png)
Mathematics, 17.06.2020 12:57 orangeicecream
A foreign company which manufactures electric bulbs has assured its customers that the lifespan of the bulbs is 28 month. Recently the company embarked on a quality improvement research for their product. After the research using new technology, a sample of 70 bulbs was tested and they gave a mean lifespan of 30.2 months with a standard deviation of 4months. Does this justify the research undertaken? the critical value of the one tailed test at 1% level of significance to conduct a statistical test in order to establish the truth about the above question + 2.33. I need answer Thanks
![ansver](/tpl/images/cats/User.png)
Answers: 1
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:00
What is the difference between the predicted value and the actual value
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:30
It took alice 5 5/6 hours to drive to her grandparents' house for . on the way home, she ran into traffic and it took her 7 3/8 hours. how much longer did the return trip take? write your answer as a proper fraction or mixed number in simplest form. the trip home took __hours longer. ?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:30
Kyle and elijah are planning a road trip to california. their car travels 3/4 of a mile per min if they did not stop driving, how many miles could kyle and elijah drive in a whole day? ? 1 day = 24 hours. plzzz i will give you 100 points
Answers: 2
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:00
Which of the functions graphed below has a removable discontinuity?
Answers: 2
You know the right answer?
A foreign company which manufactures electric bulbs has assured its customers that the lifespan of t...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 08.10.2019 14:10
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 08.10.2019 14:10
![question](/tpl/images/cats/mat.png)
Mathematics, 08.10.2019 14:10
![question](/tpl/images/cats/obshestvoznanie.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.10.2019 14:10
![question](/tpl/images/cats/himiya.png)
Chemistry, 08.10.2019 14:10
![question](/tpl/images/cats/fizika.png)
Physics, 08.10.2019 14:10
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.10.2019 14:10
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
History, 08.10.2019 14:10
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 08.10.2019 14:10
![question](/tpl/images/cats/informatica.png)
Computers and Technology, 08.10.2019 14:10
![question](/tpl/images/cats/fizika.png)
Physics, 08.10.2019 14:10
![question](/tpl/images/cats/en.png)
English, 08.10.2019 14:10