![subject](/tpl/images/cats/mat.png)
Mathematics, 30.07.2020 01:01 amw4
On a multiple choice test with 13 questions, each question has four possible answers, one of which is correct. For students who guess at all answers, find the standard deviation for the number of correct answers.
Select one:
A. 1.875.
B. 1.53.
C. 1.47.
D. 1.5.
E. 1.561.
![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 17:30
Assume that 1400 births are randomly selected and 1378 of the births are girls. use subjective judgment to describe the number of girls as significantly high, significantly low, or neither significantly low nor significantly high. choose the correct answer below. a. the number of girls is neither significantly low nor significantly high. b. the number of girls is significantly high. c. the number of girls is significantly low. d. it is impossible to make a judgment with the given information.
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:00
Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:30
The measure of one angle of an octagon is two times smaller that of the other seven angles. what is the measure of each angle?
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 21:30
‼️‼️‼️10 points‼️‼️‼️ me it’s important‼️‼️‼️‼️‼️
Answers: 1
You know the right answer?
On a multiple choice test with 13 questions, each question has four possible answers, one of which i...
Questions
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.05.2021 20:50
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/mkx.png)
Arts, 11.05.2021 20:50
![question](/tpl/images/cats/mat.png)
Mathematics, 11.05.2021 20:50
![question](/tpl/images/cats/biologiya.png)
Biology, 11.05.2021 20:50
![question](/tpl/images/cats/mat.png)
Mathematics, 11.05.2021 20:50
![question](/tpl/images/cats/geografiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.05.2021 20:50
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 11.05.2021 20:50
![question](/tpl/images/cats/mkx.png)
Arts, 11.05.2021 20:50
![question](/tpl/images/cats/en.png)
English, 11.05.2021 20:50
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
History, 11.05.2021 20:50