Answer:
It is proportional
Step-by-step explanation:
y=Kx
because it crosses the orgin
CRoC=Cop
Answer: the probability of a bulb lasting for at most 552 hours is 0.953.
Step-by-step explanation:
Since the life of light bulbs are distributed normally, we would apply the formula for normal distribution which is expressed as
z = (x - µ)/σ
Where
x = the life of light bulbs in hours.
µ = mean hour
σ = standard deviation
From the information given,
µ = 510 hours
σ = 25 hours
We want to find the probability of a bulb lasting for at most 552 hours. It is expressed as
P(x ≤ 552)
For x = 552
z = (552 - 510)/25 = 1.68
Looking at the normal distribution table, the probability corresponding to the z score is 0.953
Answer:
True
Step-by-step explanation:
The answer is "True" because the data set was picked at random.
Answer:
For the first one, x is 9 and y is 2. 9 + 3(2) = 15. The second is y = 3.75
Answer:
121 cm^2
Step-by-step explanation:
area of triangle = base*height/2
=11*22/2
=242/2
=121 cm^2