Answer:
The distribution of average life time is approximately normallyl distributed with mean 20 hours and standard deviation of 0.4743 hours
Step-by-step explanation:
The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean
and standard deviation
, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean
and standard deviation
.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
In this problem

The distribution of average life time is approximately normallyl distributed with mean 20 hours and standard deviation of 0.4743 hours
Answer:
f(n) = 8 - 3f(n-1)
d : { 8 >= x }
Step-by-step explanation:
Basically we know 8 is the first term, so we subtract 3 to get 5 which is the second term. Then we know d = -3. Now we that we established the formula, let's make a domain. We know x can never be greater than 8 so x is always less than or equal to 8.
:)
26/5 or in decimal 5.2...................................
To solve this, use proportions. The height of the pole corresponds to the height of the building; the shadows are corresponding: 3.1/x =1/45.5
3.1 times 45.5=1x
141.05=x
The building is 141 meters tall
Answer:
Its more because 9.36 has a bigger beginning then 9.359.
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