Answer:
h=2.2
Step-by-step explanation:
Answer
given,
installed electric lamp = 2000
average life = 1000 hrs
standard deviation = 200 hrs
a)
let after p hors 10% bulb fails ,
P(X<p) = 0.10
from Normal distribution table,
P(Z<-1.28) = 0.10
on comparing
x = -1.28 x 200 + 1000
x = 744 hours
b) P( 900 < X < 1300) =
=
= P(-0.5 < Z < 1 .5)
= P(Z<1.5) - P(Z<-0.5)
= 0.93319 - 030854
= 0.62465
lamps may be expected to fail between 900 and 1300
= 0.62465*2000
= 1249.3
= 1249 (approx)
Answer:
c
Step-by-step explanation:
since there are two mode that means it is 6 and 8 and mode is how many time a number appears
<span>Part A: the expression is written as b=8p because 8 ounces are needed per person. b represents the number of ounces of broccoli that are necessary, and p represents the number of people.
Part B: We can use the expression we made in the beginning to solve this. b would be equal to 32 because that is the number of ounces of broccoli. Then we simply solve for p in 32=8p. When you divide both sides by 8, the answer is p=4. So he can feed 4 people.
Hope this helps!</span>
X is left and right
hmm
see the aproximate slope
see endpoints
ok, so from about (0,3) to (35,30)
slpoe is 27/35
so
y=(27/35)x+3 about
so when x=
ok, so according to the garph, when x=35, y=30, not 20
ok, so when x=40
y=(27/35)x+3
y=(27/35)*40+3
y=33.8571 about for x=40