Answer:
E: None of the above
Step-by-step explanation:
Hello!
The objective is to find out how much time it takes people to commute to work.
Two samples where taken and two hypothesis tests where made:
One:
Sample mean 71 min; p-value: 0.03
Two:
Sample mean 72 min; p-value: 0.06
You have to choose from the options, a possible pair of hypotheses used for these two tests.
The parameter of the study is the population mean μ.
In the statistic hypotheses, the parameters are given either a known population value or a suspected value. So all options including sample values are wrong.
As said before the objective of the survey is to "determine how much time people spend commuting to work" in other words, whether or not the population mean is equal to a certain value.
H₀: μ = μ₀
H₁: μ = μ₀
Where μ₀ represents the theoretical value of the population mean. As you can say the hypotheses pair is two-tailed, not one-tailed.
Then the correct answer is E: None of the above
I hope this helps!
To determine what percentage of 642 the number 321 is, we can follow the equation below.
(Smaller Number / Bigger Number)*100
We can plug the numbers into the equation to get our answer.
(321/642)*100 = 0.5 *(100) = 50%
So 321 is 50% of 642
The answer to your question is A
7/16*4/3*1/2=28/96=7/24 by simply multiplying and then simplifying the fraction.
D is the correct answer when you distribute.
