The null hypothesis is that the mean is 83 out of 100. The alternative hypothesis is that the mean is less than 83.
Answer: 
Step-by-step explanation:
Given
The yellow line leaves the station every 6 min
The red line leaves the station every 8 min
They both leave at 
Both trains meet again after, LCM(6,8)=24 min
i.e. at

Answer:
The answer is 7/2.
<em><u>hope</u></em><em><u> </u></em><em><u>it helps</u></em><em><u>.</u></em><em><u>.</u></em>
The answer is :
0.18181818
But you can also write it like this