Answer:
The standard deviation reduces when sample size (n) increases
Step-by-step explanation:
From the above information given, we have that mean = 75.5
Standard deviation = 3.5
But Standard deviation = √summation (x-u)/n
This simply implies that when sample (n) is increased there would be a reduction in the standard deviate.
Answer:
3t-10
Step-by-step explanation:
![( \frac{12t}{8} - 5)2](https://tex.z-dn.net/?f=%28%20%5Cfrac%7B12t%7D%7B8%7D%20%20-%205%292)
![= (\frac{12t}{8} - \frac{5 \times 8}{8} )2](https://tex.z-dn.net/?f=%20%3D%20%20%28%5Cfrac%7B12t%7D%7B8%7D%20%20-%20%20%5Cfrac%7B5%20%5Ctimes%208%7D%7B8%7D%20%292)
![= ( \frac{12t - 40}{8} )2](https://tex.z-dn.net/?f=%20%3D%20%28%20%5Cfrac%7B12t%20-%2040%7D%7B8%7D%20%292)
![= ( \frac{2(12t - 8)}{8} )](https://tex.z-dn.net/?f=%20%3D%20%28%20%5Cfrac%7B2%2812t%20-%208%29%7D%7B8%7D%20%29)
![= 3t - 10](https://tex.z-dn.net/?f=%20%3D%203t%20-%2010)
<u>Answer:</u>
- There is a 41.7% chance that you got a blue ball.
<u>Step-by-step explanation:</u>
<u>Total number of blue balls/Total number of balls x 100 = Chance of getting a blue ball</u>
- => 5/12 x 100
- => 5/6 x 50
- => 5/3 x 25
- => 125/3
- => 41.7
Hence, <u>there is a 41.7% chance that you got a blue ball.</u>
Hoped this helped.
![BrainiacUser1357](https://tex.z-dn.net/?f=BrainiacUser1357)
Answer:
10
Step-by-step explanation:
The first step would be to simplify the parenthesis so the equation will be solvable. For example: 2x+3y+2(x-y) -3x becomes 2x+3y+2x-2y-3x. So now we can solve the equation and get our answer. The rules of the distributive property state that you add the numbers with similar variables. Example( I am using the equation) 2x+2x-3x equals x, 3y-2y equals y. So the final answer is x+y!