You have to orginize them from smallest to largest, 'x' is the median so I put it in the middle:
3, 4, 10, x,15, 18, 21
That means 11-14 could be x.
Answer:
The standard deviation of the sample mean is 4 minutes
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, we have that:
The standard deviation of the population is 32.
Sample of 64.
So
The standard deviation of the sample mean is 4 minutes
Because 5 in the main constant and there are 5 numbers, It will be 5 to the power of 5, so you will write it as 5^5
Answer:
3x3-x2-5x+3
Step-by-step explanation:
Open brackets
Answer:
5w/17
10 books
Step-by-step explanation:
Initial Amount had = $6w
Cost per book = $17
Amount had after book purchase = $w
The number of books purchased :
(Initial amount had - amount had after purchase) / cost per book
($6w - $w) / $17
$5w / $17
Number of books purchased = 5w/17
B.) if w = 34
Number of books purchased :
(5*34) / 17
= 170 / 17
= 10 books
