![subject](/tpl/images/cats/mat.png)
Mathematics, 07.10.2019 18:30 ayeelol4936
Two catalysts in a batch chemical process, are being compared for their effect on the output of the process reaction. a sample of 12 batches was prepared using catalyst 1, and a sample of 10 batches was prepared using catalyst 2. the 12 batches for which catalyst 1 was used in the reaction gave an average yield of 85 with a sample standard deviation of 4, and the 10 batches for which catalyst 2 was used gave an average yield of 81 and a sample standard deviation of 5. find a 90% confidence interval for the difference between the population means, assuming that the populations are approximately normally distributed with equal variances.
![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 16:30
Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?
Answers: 2
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:00
The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?
Answers: 1
![question](/tpl/images/cats/mat.png)
You know the right answer?
Two catalysts in a batch chemical process, are being compared for their effect on the output of the...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 08:02
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 08:02
![question](/tpl/images/cats/en.png)
English, 23.05.2020 08:02
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 08:02
![question](/tpl/images/cats/istoriya.png)
History, 23.05.2020 08:02
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 08:02
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 08:02
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 08:02
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 08:02
![question](/tpl/images/cats/biologiya.png)
Biology, 23.05.2020 08:02
![question](/tpl/images/cats/mat.png)
Mathematics, 23.05.2020 08:02
![question](/tpl/images/cats/ekonomika.png)
Business, 23.05.2020 08:02
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 23.05.2020 08:02