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JulijaS [17]
3 years ago
6

In a certain​ city, the average​ 20- to​ 29-year old man is 69.8 inches​ tall, with a standard deviation of 3.2 ​inches, while t

he average​ 20- to​ 29-year old woman is 64.3 inches​ tall, with a standard deviation of 3.9 inches. who is relatively​ taller, a​ 75-inch man or a​ 70-inch woman?

Mathematics
1 answer:
rodikova [14]3 years ago
6 0

Answer:

the man

Step-by-step explanation:

The wording "relatively taller" in this context is presumed to be a reference to the corresponding percentile or z-score. By hand, the z-score is easier to calculate.

z = (x - μ)/σ

For the man,

... z = (75 -69.8)/3.2 = 1.625

For the woman,

... z = (70 -64.3)/3.9 ≈ 1.462

The man's z-score is higher, so he is taller than a larger percentage of the male population than the woman is of the female population.

___

If you're doing this by calculator, you can let it show you the percentile rank of each height. The man is in the 95th percentile; the woman the 93rd percentile. So, the man is relatively taller.

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2.50f=15

f=6

Thats what I think it is, I'm sorry if I'm incorrect.
8 0
3 years ago
20 POINTS
chubhunter [2.5K]
Answer: 2 inches, 3 inches, or 3.125 and 2.083


Explanations:
The simplest way is to take 20% of the 2.5 inches and go that much above & below 2.5 inches.

2.5 x 20% = 2.5 x 0.20 = 0.5

So 2.5 - 0.5 = 2 inches was predicted
And 2.5 + 0.5 = 3 inches was predicted.

The more complicated way is to see number + 20% of that number = 2.5, and what number - 20% = 2.5.

Which solution sounds more like what you’re doing in class right now?

If it’s the more complicated way:

0.8x = 2.5 (80% of the predicted rain value equals 2.5)
x = 3.125 inches was predicted

1.2x = 2.5 (120% of the predicted rain value equals 2.5)
x = 2.083 inches was predicted

Sorry, this is probably confusing. Let me know what questions you have.
6 0
2 years ago
PLEASE HELPPP!!!!!! Write an equation of the line passing through point P that is perpendicular to the given line.
ArbitrLikvidat [17]

Answer:(d): y=ax+b (a≠0); (d1)y=-4x+13

because of (d)⊥(d1) --> a.(-4)=-1 --> a=\frac{1}{4}

(d): y=\frac{1}{4}x+b. (d) pass through  P(-1;-2) so we have

-2=(1/4).(-1)+b ---> b=\frac{-7}{4}

(d) y= \frac{1}{4}x+ \frac{-7}{4}

4 0
3 years ago
Solve the following:<br> 3/4x=1/8<br> x/5=2.3<br> x/3.2=4.5
antiseptic1488 [7]

Step-by-step explanation:

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3 years ago
½ is the same as 0.5 and the ratio of _____.
Crazy boy [7]
1:2

Similar to the 1/2 fraction, 1:2 is a simplified ratio of a half.
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3 years ago
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