Answer:
The standard deviation of the sample mean differences is _5.23_
Step-by-step explanation:
We have a sample of a population A and a sample of a population B.
For the sample of population A, the standard deviation
is

The sample size
is:
.
For the sample of population B, the standard deviation
is

The sample size
is:
.
Then the standard deviation for the difference of means has the following form:

Finally

Thanks for the helpful answers
Answer:
10
Step-by-step explanation:
Yesterday, Priya successfully made 6 free throws.
Today, she made 75% as many as yesterday.
We are asked to calculate the number of successful free throws that Priya made today.
So, the number will be
.
Since it is the number of successful free throws, so it will be 10 throws. ( Answer )
<h2>1210 cubic feet</h2>
Step-by-step explanation:
Initial dimensions of the storeroom were
length,
width and
height.
The room is in the shape of a cuboid. Volume of a cuboid =
, where
are the length, width and height of the cuboid.
So, Volume of storeroom initially = 
Finally, the length was increased to
and width to
.
Final volume of storeroom = 
Increase in volume = 
∴ 1210 cubic feet of storage was added.
The correct answer is 4 and 1/8