Question 3 of 10
The table below shows the probability distribution of students in a high
sch...
![subject](/tpl/images/cats/mat.png)
Mathematics, 18.03.2021 02:10 naomicervero
Question 3 of 10
The table below shows the probability distribution of students in a high
school with 1500 students. What is the expected value for the age of a
randomly chosen student?
Age
13
14
15
16
17
18
Probability
0.01
0.25
0.28
0.30
0.15
0.01
O A. 15.36
B. 15.28
![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)
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:40
Some boys and girls were asked if they had a pet. one third of the group were boys. there were 20 boys. 20% of the girls had a pet. boys with a pet : girls with a pet = 1 : 5 i need to know how many girls there are.
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 23:00
Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 22.06.2019 02:00
Were only 64 seats. the remaining 6 students had to travel in a separate van. the equation 2b + 6 = 70 represents the given scenario. what does b represent? the number of buses the number of vans the number of students who rode on each bus the total number of students going to the football game
Answers: 1
You know the right answer?
Questions
![question](/tpl/images/cats/istoriya.png)
History, 03.08.2019 03:30
![question](/tpl/images/cats/mat.png)
Mathematics, 03.08.2019 03:30
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/fizika.png)
Physics, 03.08.2019 03:30
![question](/tpl/images/cats/mat.png)
Mathematics, 03.08.2019 03:30
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
History, 03.08.2019 03:30
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 03.08.2019 03:30
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)