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Alona [7]
3 years ago
13

Researchers are assessing a new screening tool (blood-based assay) for early identification of prostate cancer. The test is run

three times in a row on the same sample and then compared to the gold standard currently available test. Researchers found the following results.
New test 1: Elevated Levels
New test 2: Not Elevated Levels
New test 3: Elevated Levels
New test 4: Not Elevated Levels
a. Accurate and reliable.
b. Accurate but not reliable.
c. Reliable but not accurate.
d. Not accurate and not reliable.
e. None of the answers listed here are correct.
Mathematics
1 answer:
natima [27]3 years ago
7 0

Answer: B. Accurate but not reliable

Step-by-step explanation:

An experiment is said to be "reliable" when it consistently gives the same answers when done repeatedly, when the experiment is carried out several times it gives the same result each times.

An experiment is said to be " accurate "

when it produce a correct result using the right procedure and method .

In this case the research assessing a new screening tools for early identification of prostate cancer, test result is "accurate but not reliable ", since the consistent test result was not accurate.

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2 years ago
Write the equation of the parabola in vertex form with vertex at (2,-5) and y intercept at -17.
jok3333 [9.3K]
<h3>Answer:</h3>

y = -3(x -2)² -5

<h3>Explanation:</h3>

The equation of a parabola with vertex (h, k) is given by ...

... y = a(x -h)² +k . . . . . . . for some vertical scale factor "a".

We can find the value of "a" by substituting the coordinates of a point that is not the vertex. Here, that point is the y-intercept: (0, -17).

... y = a(x -2)² -5 . . . . . initial form of the equation for the parabola

... -17 = a(-2)² -5 . . . . . substitute y-intercept values

... -12 = 4a . . . . . . . . . . add 5, simplify

... -12/4 = a = -3

The desired equation is ... y = -3(x -2)² -5.

4 0
3 years ago
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Answer:

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Step-by-step explanation:

Ok buddy, just say like 55 centimeters, and say you used a measuring tape.

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