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
A hyperbola is like having two asymptotic parabolas facing opposite to each other. The point halfway between the vertices of the two parabolas is the hyperbola's center point.
Thank you for posting your question here in Brainly. I hope I was able to help you. Have a good day.
Answer:
About 780 plants
Step-by-step explanation:
195 flowers*4 volenteers=780 plants
Answer:
3(b+7)=6
Sum means adding, so 3 is multiplied by (b+7)
Answer:
35*5x + 40 * 5x = 5x(40+35)= 5x(75)
Step-by-step explanation:
You can use the distributive property and you will get 5x(75)