Answer:
H0: p(1980) = p(2010) ; H1 : P(1980) > P(2010)
0.02
Step-by-step explanation:
Given that:
Sample size in both 1980 and 2010 = 1000 samples :
Proportion in favor :
P(1980) = 0.66
P(2010) = 0.64
To test the hypothesis :
Null hypothesis :
Proportion in favor are the same in both years
Null hypothesis = H0 = p(1980) = p(2010)
Alternative hypothesis :
Proportion in favor in 1980 is greater than that in 2010
Alternative hypothesis = H1 : P(1980) > P(2010)
The sample statistic :
P(1980) - p(2010)
0.66 - 0.64
= 0.02
Equation:
6(1/x) = 2(1/7)
-----
6/x = 2/7
-----
2x = 42
x = 21
Answer:
A,B,C,E,F
Step-by-step explanation:
The only one that it is not is irrational. I think this is correct and I hope it helps
Answer:
1
Step-by-step explanation:
Add 4+1=5 then do 5÷5=1
11 squared is 121
20 squared is 400
121+400= 521
The approximate square root of 521 is approximately 22.8254
