From long experience, it is known that the time it takes to do an oil change and lubrication job on a vehicle has a normal distr
1 answer:
You might be interested in
Solution :
Let A = Economics, B = Mathematics
n(A) = 311, n(B) = 243,
a). So,
= 311 + 243 - 135
= 419
b). n(A only) = 311 - 135
= 176
n(B only) = 243 - 135
= 108
Exactly one of these two courses
= 0.568
c). Neither economics nor mathematics
= 0.162
Answer:
Step-by-step explanation:
From figure,
In triangle
Hence,
