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Mrrafil [7]
3 years ago
15

Would that he the answer or option A ?

Mathematics
2 answers:
sammy [17]3 years ago
4 0
Your answer is correct
Leno4ka [110]3 years ago
3 0
My guess is C, but I’m not 100% sure
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A study looked at n=238 adolescents, all free of severe illness.23 Subjects wore a wrist actigraph, which allowed the researcher
Vesnalui [34]

Answer:

Step-by-step explanation:

Since n < 30, we will find the t-score and compare that to the t-score of a significance level of 1%.    

Since they are asking if the difference is significant, we will have a two tailed test, with degree of freedom being 22, so our critical values are

t < -2.704 and t > 2.704

Our t-value for this situation is

t = ([µ + 5.8] - µ)/(1.4/√23)

It's µ + 5.8 because the problem told us that their levels are 5.8 mm higher than the average, so it's the average, plus 5.8

Simplify the equation...

t = 5.8/(1.4/√23)

t = 19.868

19.868 > 2.704, the evidence supports that there is significant difference between the sample and the population

8 0
3 years ago
Which matrices can be added together?<br> please help, thank you
sergiy2304 [10]
K with T. Same row and columns
3 0
3 years ago
In △ABC, the altitudes from vertices B and C intersect at point M, so that BM = CM. Prove that △ABC is isosceles.
AlekseyPX

Answer:

m∠MBC=m∠MCB by reason base angle theorem

Step-by-step explanation:

3 0
2 years ago
How many ways can you get to the end, only being able to go down or left, and having to avoid the green thing?
kirill [66]

I got 21, I give up.

6 0
3 years ago
Calculate the loss on selling 50 shares of stock originally bought at 133/4 and sold at 12.
Anarel [89]
Here is the solution of the given problem above:
The first thing we should do is to multiply 50 and 13 3/4 
13 3/4 is equivalent to 13.75 .
So, we then multiply 
50 x 13.75  and we get 687.50.
so, $687.50 was the amount spent on the stock. 
Now, lets find out how much they sold them for:
What we do is multiply 12 and 50 
50 x 12 would be 600
We can find out the loss by subtracting 
$687.50 - $600 and that gives us $ 87.50.
Therefore, the amount that is loss in selling is $87.50. The correct answer would be option B. Hope this answer helps.
5 0
3 years ago
Read 2 more answers
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