30.007
300/10=30
7/1000=.007
30+.007=30.007
Answer:
H0 is accepted
there is no difference between the proportions of Indian and Asian young people who listen to rap music every day.
Step-by-step explanation:
Given a sample survey compared 634 randomly chosen Indians aged 15 to 25 with 567 randomly selected Asians in the same age group.

It found that 368 of the Indians and 130 Asians listened to rap music every day.

Null hypothesis H0: there is no difference between the proportions of Indian and Asian young people who listen to rap every day.

Alternative hypothesis:- 
Level of significance α = 0.05
The test of statistic

where 
p = 0.414
and q = 1-p = 1- 0.414 =0.586

on calculation , we get
z = 0.300 ><1.96 at 95 % level of significance
H0 is accepted
there is no difference between the proportions of Indian and Asian young people who listen to rap every day.
Let numbers of books be 'b' and numbers of CDs be 'c'
We can set up two equations:
Equation [1] ⇒

Equation [2] ⇒

We are solving for the number of books and the number of CDs bought
When we have two equations in terms of two different variables;

and

, that we need to solve, then this becomes a simultaneous equation problem.
First, rearrange Equation [1] to make either

or

the subject:


Then we substitute

into Equation [2]






Now we know the value of

which is

, substitute this value into

we have

Answer:
Numbers of books = 13
Numbers of CDs = 7
Step-by-step explanation:
.20 times 2000 is your answer = $40 is 20% of 2000.