Answer:
Option d
Step-by-step explanation:
Given that television networks frequently run public opinion polls on issues of concern. One network conducted a scientific poll asking a question concerning the approval rating of the way President Obama was handling the Iraq War. At about the same time a second network ran an online poll using a very similar question.
Observed data is
Poll Scien Online total
approve 339 385 724
disapprove 780 573 1363
1119 958 2087

(Two tailed chi square test)
Let us find out expected and chi square
Expected = row total x column total/grand total
The cell count expected in the online poll for those who approve
=
chi square = 7.81
Hence option d is right.
Answer:true
Step-by-step explanation:
its true i think
25/28 - 2/7
it doesn’t need to be solved because it asked for an expression and not an equation, so no equal sign either
You could say 8r+2 times s +4 or –5x2y4
f(x)=40
x=8
so if x=2 it would be 40/8 which is 5