Answer:
3.75x-8.75 or
Step-by-step explanation:
Answer:
0.8041
Step-by-step explanation:
We know that
μ=72 and σ=5
and P(65<X<78)
We can determine the Z value as (X-μ)/σ
P( 65<X<78 )=P( 65-72< X-μ<78-72)


To fine the Z values:

From the standard normal tables:

to find P ( Z<-1.4)

From the standard normal tables:

Therefore


10
20
30 there u go
that the rounding
Answer:
a
the cot of 5 notebook is greater than the cost of 3notebooks plus a $2 pen