You just have to find what number times 9 equals your original equation so 9 and -2 are -18 and 9 and 3 are 27 so your distributed equation would be:
9(-2x+3)
Answer:
z= 3.63
z for significance level = 0.05 is ± 1.645
Step-by-step explanation:
Here p = 42% = 0.42
n= 500
We formulate our null and alternative hypotheses as
H0: p= 0.42 against Ha : p> 0.42 One tailed test
From this we can find q which is equal to 1-p= 1-0.42 = 0.58
Taking p`= 0.5
Now using the z test
z= p`- p/ √p(1-p)/n
Putting the values
z= 0.5- 0.42/ √0.42*0.58/500
z= 0.5- 0.42/ 0.0220
z= 3.63
For one tailed test the value of z for significance level = 0.05 is ± 1.645
Since the calculated value does not fall in the critical region we reject our null hypothesis and accept the alternative hypothesis that more than 42% people owned cats.
The answer to the question is
D. 1/2
Answer: There is three girls.
Step-by-step explanation:
There are 15 boys, since this is three more than four times the number of girls, do 15 - 3, which is 12 divided by 4 and you get three.
148/x=100/108(148/x)*x=(100/108)*x -148=0.925925925926*x
(0.925925925926) to get x148/0.925925925926=x 159.84=x x=159.84
