Answer:
$4500
Step-by-step explanation:
Given data
State income tax= $234
we are told that the tax paid is 5.2% of her income
Let her earnings be x
so
5.2% of x = $234
5.2/100*x=234
0.052x= 234
x= 234/0.052
x= $4500
Hence her earnings is $4500
Answer:
The mean of the sampling distribution of x is 0.5 and the standard deviation is 0.083.
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.
For the population, we have that:
Mean = 0.5
Standard deviaiton = 0.289
Sample of 12
By the Central Limit Theorem
Mean = 0.5
Standard deviation 
The mean of the sampling distribution of x is 0.5 and the standard deviation is 0.083.
Answer:
9
count all the whole squares
Answer:
176 mm²
Step-by-step explanation:
The area of a square is s² , where s is the measure of the side, thus
area = (4
)²
= 4 × 4 ×
×
= 16 × 11 = 176 mm²