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Alekssandra [29.7K]
2 years ago
11

Which of the following is not needed to compute t statistic?

Mathematics
1 answer:
MrMuchimi2 years ago
6 0
The value of the population variance or standard deviation
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ASAP!! Please help me. I will not accept nonsense answers, but will mark as BRAINLIEST if you answer is correctly with solutions
EleoNora [17]

Answer:

<h3> X = 2 , X = -3</h3>

Option C is the correct option.

Step-by-step explanation:

f(x) = a {x}^{2}  + bx + c

Discriminant = {b}^{2}  - 4ac

Given d = 15

When discriminant D > 0 --> roots are real and distinct. ( unequal )

So , {3}^{rd} option has real and distinct roots.

Hope this helps..

Best regards!!

4 0
3 years ago
Please help with these math questions I really need it ! Don't just do it for points pls
steposvetlana [31]

Answer:

wouldn't that be 81 but i dont know

3 0
2 years ago
Read 2 more answers
Suzan bought some balloons and repacked them for sale. He threw away 76 balloons each. Each packet was sold at $86. After sellin
In-s [12.5K]

Answer:

188 balloons

Step-by-step explanation:

First, we have to divide the amount he collected altogether by the price of each balloon that he sold to find out how many balloons he sold:

9632 / 86 = 112 balloons

She sold 112 balloons.

We know that she threw 76 balloons away, therefore, the number of balloons she bought was:

112 + 76 = 188 balloons

4 0
2 years ago
3. Last month, Ed ate 9 apples, 5 bananas, 4 peaches,
yulyashka [42]

Answer:

(5:23), (5/23), or (5 to 23)

there are 5 bannanas to every 23 pieces of fruit there are.

8 0
3 years ago
(4x-y=-15)<br>(3x-2y=-10)<br>​
Andreyy89

Answer:

<h2>x = -4 and y = -1 → (-4, -1)</h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}4x-y=-15&\text{multiply both sides by (-2)}\\3x-2y=-10\end{array}\right\\\underline{+\left\{\begin{array}{ccc}-8x+2y=30\\3x-2y=-10\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad-5x=20\qquad\text{divide both sides by (-5)}\\.\qquad\qquad\boxed{x=-4}\\\\\\\text{Put the value of x to the first equation.}\\\\4(-4)-y=-15\\-16-y=-15\qquad\text{add 16 to both sides}\\-y=1\qquad\text{change the signs}\\\boxed{y=-1}

5 0
3 years ago
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