Solve ln2x+ln2=0. x=
1 answer:
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Answer:
mean absolute deviation is 18.85
Step-by-step explanation:
<u>Step 1:</u>-
Given observation values 22,26,28,35,45,63,91
mean = 44.28≅ 44
<u>Step2</u>:-
The deviations of the respective observations from the mean (x)
That is
22-44, 26-44,28-44,35-44,45-44,63-44,91-44
-22, -18 ,-16 ,-9, 1, 19, 47
<u>Step 3:</u>-
The absolute values of the given data
modulus of all these values
22,18,16,9.1,19,47
<u>Step 4</u>:-
Mean absolute deviation M.D=∑
on simplification we get mean absolute deviation is 18.85
Answer:
The mean of the sampling distribution is 20 and the standard deviation is 2.89.
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.
Population:
Mean 20, standard deviation of 5.
Sampling distribution:
3 rounds
Mean = 20
The mean of the sampling distribution is 20 and the standard deviation is 2.89.