Answer:
10.8
Step-by-step explanation:
9k+2=99
-2 -2
9k=97
k=10.8
The probability of a randomly selected hard drive from the company lasting between 2 years 3 months and 3 years 3 months is 32.22%
Given here,
Mean (μ) = 3 years 6 months
= (3×12)+6 = 42 months
Standard deviation (σ) = 9 months
We will find the z-score using the formula: z = (X - μ)/σ
Here X₁ = 2 years 3 months
= (2×12)+3 = 27 months
and X₂ = 3 years 3 months
= (3×12)+3 = 39 months
So, z (X₁ =27) =
and z (X₂ =39) =
According to the standard normal table,
P(z> -1.666...) = 0.0485 and P(z< -0.333...) = 0.3707
So, P(27 < X < 39)
= 0.3707 - 0.0485
= 0.3222
= 32.22 % [Multiplying by 100 for getting percentage]
So, the probability of a randomly selected hard drive from the company lasting between 2 years 3 months and 3 years 3 months is 32.22%
Answer: I would need to see the coordinate plane
Step-by-step explanation:
6 3/4
to turn a mixed number to an improper fraction...
take ur whole number (6) and multiply it by ur denominator (4)....6 * 4 = 24...now add that to ur numerator (3).....24 + 3 = 27...now put that over ur original denominator (4).......27/4 <== ur improper fraction
basically, ur just doing this : (6 * 4 + 3) / 4 = (24 + 3) / 4 = 27/4
Answer:
<h3>man tht is hard
<em><u> </u></em><em><u> </u></em><em><u> </u></em><em><u> </u></em><em><u> </u></em><em><u> </u></em><em><u> </u></em><em><u> </u></em><em><u> </u></em><em><u> </u></em><em><u> </u></em><em><u> </u></em><em><u> </u></em><em><u>mhmm</u></em></h3>
Step-by-step explanation:
srry but can't jelp