Answer:
74 i think
Step-by-step explanation:
The answer is 5.5
The standard deviation (sd or σ) of the sample mean difference is:
sd = √(sd₁²/n₁ + sd₂²/n₂)
For the population A:
sd₁ = 17.6
n₁ = 25
For the population B:
sd₂ = 21.2
n₂ = 30
Hence:
sd = √(sd₁²/n₁ + sd₂²/n₂)
= √(17.6²/20 + 21.2²/30)
= √(309.76/20 + 449.44/30)
= √(15.49 + 14.98)
= √(30.47)
= 5.5
<span><span>(x+2)(x+10) answer for that problem</span><span>
</span></span>
Answer:
3
Step-by-step explanation:
We know the formula is pi * r^2 * h, so we can do 108/12.
We end up getting 9. Then we take the square root of 9 since 9 = r^2 so our r does equal to 3
Answer:
C...........................