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Ganezh [65]
3 years ago
6

Using a sample of 40 patients from a local hospital, researchers measured cholesterol level in an attempt to estimate the mean c

holesterol level of U.S. citizens.
Is this study
A. REPRESENTATIVE?
B. NON-REPRESENTATIVE?
Mathematics
1 answer:
Burka [1]3 years ago
5 0

Answer:

B. NON-REPRESENTATIVE

Step-by-step explanation:

<em>The sample does not represent the population as a researcher is taking a sample from the hospital where the cholesterol level of the patient is generally high and the researcher is not randomly selecting the U.S. citizens.</em>

Thus, option (B) is correct.

Further, the sample is a subset of the population and it is easy to analyze as compared to the population.

The sample is said to be representative if it represents the whole population.

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Answer:

$12/25 pencils= $0.48 per pencil

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Miranda and cyndi start hiking from the same point. miranda hikes at a heading of , or due west, and cyndi hikes at a heading of
igomit [66]

They are both 6.9 miles apart after one hour if they both hike 4 miles/hour

The correct option is (B)

<h3>What is the triangle?</h3>

In terms of geometry, the triangle is a three-sided polygon with three edges and three vertices. The triangle's interior angles add up to 180°.

<h3>According to the given information:</h3>

Miranda and Cyndi start hiking from the same point. Miranda hikes at a heading of 270° or due west, and Cyndi hikes at a heading of 30°

<h3>From the isosceles triangle:</h3>

h = 4sin30

h = 4(1/2)

h = 2 miles

<h3>From Pythagoras theorem:</h3>

x² = 4² - h² = 4² - 2²

x = √12

x = 3.46 miles

Total distance = 2×3.46  = 6.9 miles

Thus, they are both 6.9 miles apart after one hour if they both hike 4 miles/hour option (B) 6.9 miles is correct.

Learn more about the triangle here:

brainly.com/question/25813512

#SPJ4

I understand that the question you are looking for :

Miranda and Cyndi start hiking from the same point. Miranda hikes at a heading of , or due west, and Cyndi hikes at a heading of , or n e. if they both hike 4 miles/hour, approximately how far apart are they after one hour?

A) 4.3 miles. .

B) 6.9 miles

C) 8.0 miles

D) 5.7 miles

4 0
2 years ago
HELP PLEASE ! ASAP !
Blizzard [7]

Answer: i think 23x

Step-by-step explanation: i might be incorrect

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Needs some help on this
kari74 [83]
A is the answer to the question.
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Convert 3x-4y = 9 to slope intercept form. What are the slope and y - intercept ?
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Answer:

Slope intercept form; -4y = -3x + 9

Y-intercept; 9

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