Answer:
16.2
Step-by-step explanation:
cause. ur a noob at math
Answer:
The probability that the average age of a randomly selected sample of 100 students will be less than 21.8 years is 0.159
Step-by-step explanation:
According to the given data we have the following:
mean = μ= 22
standard deviation = σ = 2
n = 100
μx = 22
σx=σ/√n=2/√100=0.2
Therefore, P( x < 21.8)=P(x-μx)/σx<(21.8-22)/0.2
=P(z<-1)
= 0.159
The probability that the average age of a randomly selected sample of 100 students will be less than 21.8 years is 0.159
Answer:

Step-by-step explanation:
Let’s find the common difference.
The common difference can be found by subtracting a term in the sequence with the previous term.

Apply formula for the
term of an arithmetic sequence.

is the first term of the sequence.
is the common difference.



Answer:
3/8
Step-by-step explanation:
The equation is given as:

We can simply the equation by getting rid of the denominators which is 4a and 3. Therefore we can multiply both sides with 3*4*a:

On the left hand side 4a cancels with 4a and on the right hand side 3 cancels with 3. We are left with:

∴ After simplying

The correct answer is 327,700