Answer: Mean = 52.8 mins
Step-by-step explanation:
We have lapses of 30 minutes, so we can write the average for each, this means that:
0 < t < 30 can be averaged to the middle of the range: 15 min.
Doing this, we have that:
7 students 15 min
27 students 45 min
12 students 75 min
4 students 105 min.
Now we can calculate the mean:
mean = (x1*n1 + x2*n2 + ...)/N
where x1 is the amount of time 1, and n1 is the number of students associated to that time and so on. N is the total number of students
Mean = (7*15min + 27*45min + 12*75min + 4*105min)/(7 + 27 + 12 + 4)
Mean = 52.8 mins
Answer:
Step-by-step explanation:
<u>Given:</u>
Height = 27 cm
Radius = 13 cm
<u>Formula:</u>
<u>Solution:</u>
V = 1/3 (3.14)(13)²(27)
V = (3.14)(169)(9)
V = 4778.4 cm³
![\rule[225]{225}{2}](https://tex.z-dn.net/?f=%5Crule%5B225%5D%7B225%7D%7B2%7D)
Hope this helped!
<h3>~AH1807</h3><h3>Peace!</h3>
Answer:
I think that it is 120 but not sure
Step-by-step explanation:
sorry if wrong
Since mean is 100 so Λ=1/100,
But since exponential distribution is continuous distribution so probability at a particular points
Is zero. That probability
That X is equal to 90 degree is 0.
P1=400
P2=1.01*400=404
P3=1.01*404=408.04
