Answer:
the answer is B.
Step-by-step explanation:
let me know if I'm wrong.
Answer:
And since the p value is lower than the significance level we have enough evidence to reject the null hypothesia and the best option is:
C. 0.0011; reject the null hypothesis
Step-by-step explanation:
For this case we have the following system of hypothesis:
Null hypothesis :
Alternative hypothesis:
In order to check this hypothesis we can use a z test for a proportion. The statistic is given by:
(1)
And the value for this case is
We are conducting a bilateral test so then the p value can be founded on this way:
And since the p value is lower than the significance level we have enough evidence to reject the null hypothesia and the best option is:
C. 0.0011; reject the null hypothesis
Answer:
The Younger sister is 9
Step-by-step explanation:
x = age of older sister
x - 3 = age of younger sister
4/3 = x/(x - 3)
Solve for x.
4(x - 3) = 3x
4x - 12 = 3x
x = 12
The older is 12, the younger is 12 - 3 = 9
Answer:
the first one is 1/3 x 1/4= 1 and 1/12
second one: 2 and 1/3 x 1 and 1/4= 2 and 1/12
Step-by-step explanation:
sorry if im wrong
I believe its not a function