![subject](/tpl/images/cats/mat.png)
Mathematics, 29.03.2021 18:10 smiley0326
The average annual food expense per family in a small city was $400 in 2012. Based on annual statistics, the standard deviation of food expenses is $145 over a long period of time. A random sample of 49 families was selected and their expenses for 2013 had a mean of $445. The local government wants to test if the average annual expenses on food had increased from the 2012 average allowing for type I error of 5%. After calculating the appropriate test, what can you conclude
![ansver](/tpl/images/cats/User.png)
Answers: 3
![](/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 14:30
Tanya has $42 to spend at the dolphin island store. tshirts sell for $7 each and a pair of sunglases sells for $6.tanya buys 3 tshirts. how many pairs of sunglases can she buys with the amount of money she has left
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:00
If f(x) = 4x – 3 and g(x) = 8x + 2, find each function value a.f[g(3)] b.g[f(5)] c.g{f[g(-4)]}
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:30
Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 00:00
When rolling 26 sided number cube what are the chances some of the role will be seven
Answers: 1
You know the right answer?
The average annual food expense per family in a small city was $400 in 2012. Based on annual statist...
Questions
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 01.02.2021 20:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mkx.png)
Arts, 01.02.2021 20:50
![question](/tpl/images/cats/istoriya.png)
History, 01.02.2021 20:50
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 01.02.2021 20:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 01.02.2021 20:50
![question](/tpl/images/cats/mat.png)
Mathematics, 01.02.2021 20:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 01.02.2021 20:50
![question](/tpl/images/cats/geografiya.png)
Geography, 01.02.2021 20:50