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:
32
Step-by-step explanation:
Each question has 2 possible sets of answers, so multiply the number of possible answers by how many answers there is and you get 32.
The answer to that question is going to be 44 because x ^ 7 times 46 x ^ - 2 is 44 that's the answer
Answer:
x=-5
Distribute
Subtract 9 from both sides.
Divide both sides by 3.
I would need to see it other wise how would i help you i do not know the other information i need to solve it
