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snow_lady [41]
3 years ago
7

The patient recovery time from a particular surgical procedure is normally distributed with a mean of 5.2 days and a standard de

viation of 2.2 days. What is the 90th percentile for recovery times? (Round your answer to two decimal places.)
Mathematics
1 answer:
In-s [12.5K]3 years ago
6 0

3.03 days

Step-by-step explanation:

We first look up the Z-score for 90th percentile in the table;

= 1.282

Z score is given by the formula;

X – μ / σ

We are given μ as 5.2 while σ is 2.2. Therefore;

1.282 = X -  5.2 / 2.2

1.282 * 2.2 / 5.2 = X

3.03018 = X

= 3.03

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Answer:

B

Step-by-step explanation:

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4 0
3 years ago
Can someone please help me with this question.
rusak2 [61]
25x25+20x25+20x15+15x25=1800 the answer is D.
5 0
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Statement: All equilateral triangles are congruent by SSS congruence. Is the statement true? Why or why not?
GuDViN [60]
False, An example would be an equilateral triangle with 3 sides of 3 inches,  and another with three sides of 5 inches. They will be similar but not congruent because their sides differ. because the sides and volumes differ they will not be congruent.
5 0
3 years ago
Men absolute deviation of 14, 8, 7,6,5,10,11,8,8,6
maks197457 [2]
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4 0
3 years ago
one leg of a right triangle is 5 millimeters shorter than the longer leg and the hypotneuse is 5 millimeters longer than the lon
Makovka662 [10]
The answer, in short, is that the short leg equals 15 mm, the long leg equals 20 mm, and the hypotenuse equals 25mm. but if you'd like to see how I solved it, here are the steps.
-----------------------------
The Pythagorean theorem (also known as Pythagoras's Theorem) can be used to solve this. This theorem states that one leg or a right triangle squared plus the other side of that same triangle squared equals the hypotenuse of that triangle squared. To put it in equation form, L² + L² = H².

Let's call the longer leg B, the shorter leg A, and the hypotenuse H.
From the question, we know that A = B - 5, and H = B + 5. 

So if we put those values into an equation, we have (B - 5)² + B² = (B + 5)²

Now, to solve. Let's square the two terms in parentheses first:
(B² - 5B - 5B + 25) + B² = B² + 5B + 5B + 25

Now combine like terms:
2B² -10B + 25 = B² + 10B + 25

And now we simplify. Subtract 25 from each side:
2B² - 10B = B² + 10B

Subtract B² from each side:
B² - 10B = 10B

Add 10B to each side:
B² = 20B

And finally, divide each side by B:
B = 20

So that's the length of B. Now to find out A and H.
A = B - 5, so A = 15.
H = B + 5, so H = 25.

And your final answer is A = 15mm, B = 20mm, and H = 25mm
7 0
3 years ago
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