Answer: 0.22
Step-by-step explanation:
We know that the best point estimate for the difference between two population mean is the difference between their sample means.
Given : For the 39 randomly selected upperclassmen, the sample mean was 0.12 and sample standard deviation was 0.42. For the 35 randomly selected underclassmen, the sample mean was 0.34 and the sample standard deviation was 0.87.
Let A denotes the population of upperclassmen and B denotes the population of underclassmen .
Then, the point estimate of the difference in the population mean volunteered between underclassmen and upperclassmen will be :-
Hence, the point estimate of the difference in the population mean volunteered between underclassmen and upperclassmen =0.22
Answer:
42.67%
Step-by-step explanation:
The annual growth factor for interest at annual rate r compounded quarterly is ...
(1 +r/4)^4
You want that value to be 1.5:
1.5 = (1 +r/4)^4
1.5^(1/4) = 1 +r/4
(1.5^(1/4) -1) = r/4
4(1.5^(1/4) -1) = r ≈ 0.426728
The rate r must be about 42.67%.
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<em>Comment on the wording</em>
We interpreted the problem to mean the end-of-year amount is 1.5 times the beginning-of-year amount. That is, it is "1.5 times the amount invested."
The word "more" is typically used when addition is involved. For example, "25% more" means 25% of the original is added to the original. We occasionally see "more" where "x times more" is intended to mean "x times", rather than "x times the amount, added to the original amount."
what is the picture? I would love to help if I knew what the picture looked like.
You would pay $2.24 The 25% off was 75 cents off the original price.
Answer:
The additional information require to know that the triangles are congruent by ASA is the option B)
B) ∠FDE ≅ ∠YDE
Step-by-step explanation:
Given:
∠ DEY ≅ ∠FED
To Prove:
Δ DEY ≅ Δ DEF
Proof:
In Δ DEF and Δ DEY
∠ FED ≅ ∠DEY ……….{Given}
DE ≅ DE ……….{Reflexive Property}
∠ FDE ≅ ∠ YDE ...……..{Additional Information}
Δ DEF ≅ Δ DEY ….{ By Angle-Side-Angle test}
The additional information require to know that the triangles are congruent by ASA is the option B)
B) ∠FDE ≅ ∠YDE