Step-by-step explanation:
a=12
d=6-12=-6
Tn=a+(n-1)d
Tn=12+(n-1)×-6
Tn=12+(-6)(n-1)
That is confusing do u have like pic of the question
Answer:
it's the ice.
Step-by-step explanation:
.........
Answer:
D. I would expect the means and standard deviations in the two tests to be about the same, but the standard error in Test B should be smaller than in Test A.
Step-by-step explanation:
Options Includes <em>"A.) I would expect the means, the standard deviations, and the standard errors in Test A and Test B to be about the same.</em>
<em>B.) I would expect the means of the two tests to be about the same, but both the standard deviation and the standard error in Test B should be smaller than in Test A
.</em>
<em>C.) I would expect the means of the two tests to be about the same, but both the standard deviation and the standard error in Test B should be bigger than in Test A
.</em>
<em>D.) I would expect the means and standard deviations in the two test to be about the same, but the standard error in Test B should be smaller than in Test A.</em>
<em>E.) would expect the means and standard deviations in the two test to be about the same, but the standard error in Test B should be larger than in Test A.</em>
<em />
Reason:
Since we are measuring the same quantity 100 times and 1000 times respectively in both the tests, we would expect the means and standard deviations to not be significantly different from each other.
The standard errors would differ, though, since the formula is = Standard deviation/square root of sample size. Since the sample sizes of both the tests are so significantly different, the corresponding standard errors will also be significantly different. More specifically, the standard error of Test B will be smaller than that of Test A.
Answer:
Step-by-step explanation:
Alright let's get it!
(WHOOP! WHOOP! WHOOP! WHOOP!)
First let's start with:
How can the difference of squares be written?
a^2 − b^2
This will be our friend for a while!!!
STEP 1:
Now let's start with the first problem:
t^2 − 1
It can be rewritten as,
t^2 − 1^2
Therefore choice 1 works!
STEP 2:
Next one:
p^2 − 40
The number 40 is not a complete square of any number, therefore choice 2 is not correct.
STEP 3:
Almost there!
n^2 − 225
It can be rewritten as,
n^2 − (15)^2
It is the difference of squares, therefore choice 3 is correct!!!
STEP 4:
Last one!!!!!
k^2 + 81
It can be written as,
k^2 + 9^2
It is the sum of squares, therefore the last choice is incorrect.
So......
The correct ones are:
Yassss, we survived!
So happy we got to do this together!
Hope this helps!!!
