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inna [77]
3 years ago
5

I only need letter D

Mathematics
1 answer:
strojnjashka [21]3 years ago
6 0

Answer:

its how much money he will get

Step-by-step explanation:

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Step-by-step explanation:

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Based on FAA estimates the average age of the fleets of the 10 largest U.S. commercial passenger carriers is 13.4 years with a s
Aliun [14]

Answer : 0.0129

Step-by-step explanation:

Given : Based on FAA estimates the average age of the fleets of the 10 largest U.S. commercial passenger carriers is \mu=13.4 years and standard deviation is \sigma=1.7 years.

Sample size : n=40

Let X be the random variable that represents the age of fleets.

We assume that the ages of the fleets of the 10 largest U.S. commercial passenger carriers are normally distributed.

For z-score,

z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}

For x=14

z=\dfrac{14-13.4}{\dfrac{1.7}{\sqrt{40}}}\approx2.23

By using the standard normal distribution table , the probability that the average age of these 40 airplanes is at least 14 years old will be :-

P(x\geq 14)=P(z\geq2.23)\\\\=1-P(z

Hence, the required probability = 0.0129

6 0
3 years ago
I need help ASAP !!!!
labwork [276]
Based on sss because of congruent
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3 years ago
Mathematics-Session 1: No Calculator
IRINA_888 [86]

Answer:

Think it is D I am not sure

Step-by-step explanation:

8 0
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