![subject](/tpl/images/cats/mat.png)
Mathematics, 25.06.2019 21:00 heids17043
Quarters are currently minted with weights normally distributed and having a standard deviation of 0.067. new equipment is being tested in an attempt to improve quality by reducing variation. a simple random sample of 20 quarters is obtained from those manufactured with the new equipment, and this sample has a standard deviation of 0.042. use a 0.05 significance level to test the claim that quarters manufactured with the new equipment have weights with a standard deviation less than 0.067. does the new equipment appear to be effective in reducing the variation of weights?
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/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 13:00
Write a division equation you could use to find a, the number of miles ava is in charge of. what is the value of a? write your answer is simplist form
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:00
Consider the set of all four-digit positive integers less than 2000 whose digits have a sum of 24. what is the median of this set of integers?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:30
Which inequality statement describes the two numbers on a number line? "? 7 and a number 5 units to the right of ? 7"
Answers: 2
![question](/tpl/images/cats/mat.png)
You know the right answer?
Quarters are currently minted with weights normally distributed and having a standard deviation of 0...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/istoriya.png)
History, 14.07.2020 01:01
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.07.2020 01:01
![question](/tpl/images/cats/mat.png)
Mathematics, 14.07.2020 01:01
![question](/tpl/images/cats/mat.png)
Mathematics, 14.07.2020 01:01
![question](/tpl/images/cats/en.png)
English, 14.07.2020 01:01
![question](/tpl/images/cats/mat.png)
Mathematics, 14.07.2020 01:01
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 14.07.2020 01:01
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 14.07.2020 01:01