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sergey [27]
2 years ago
11

A clinical test on humans of a new drug is normally done in three phases. Phase I is conducted with a relatively small number of

healthy volunteers. For​ example, a phase I test of a specific drug involved only 7 subjects. Assume that we want to treat 7 healthy humans with this new drug and we have 11 suitable volunteers available. Complete parts​ (a) through​ (c) below.a. If the subjects are selected and treated in sequence, so that the trial is discontinued if anyone displays adverse effects, how many different sequential arrangement are possible if 7 people are selected from the 9 that are available? Choose the correct answer below. A. 181,440 B. 362,880 C. 5,040 D. 36b. If 7 subjects are selected from the 9 that are available, and the 7 selected subjects are all treated at the same time, how many different treatment groups are possible? There are_________ different treatment groups possible c. If 7 subjects are randomly selected and treated at the same time, what is the probability of selecting the 7 youngest subjects? P(selecting the 7 youngest subjects)_________(Type an integer or a simplified fraction.)
Mathematics
1 answer:
navik [9.2K]2 years ago
6 0

Answer:

A clinical test on humans of a new drug is normally done in three phases. Phase I is conducted with a relatively small number of healthy volunteers. For​ example, a phase I test of a specific drug involved only 7 subjects.

Step-by-step explanation:

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Erika is writing a coordinate proof to show that the diagonals of a rectangle are congruent. She begins by assigning coordinates
klemol [59]

Answer:

Option C is the correct choice.

Step-by-step explanation:

We are given the coordinates of rectangle and we are asked to find the correct option that describes that diagonals JL and KM are congruent.

Since we that a rectangle have four right angles.

We will use Pythagorean theorem to prove that diagonals JL and KM are congruent.

In triangle KLM we can see that KL is b units long and LM is a units long. By Pythagorean theorem \sqrt(a^{2}+b^{2})=KM

In triangle JML we can see that JM is b units long and LM is a units long. By Pythagorean theorem \sqrt(a^{2}+b^{2})=JL

Therefore, we can see that \sqrt(a^{2}+b^{2})=KM=LM and option C is the correct choice.  

7 0
2 years ago
Read 2 more answers
PLEASE HELP!
Nadya [2.5K]

Draw the DE ray away from the BAC angle is the next step to copy the BAC angle

<h3>Further explanation </h3>

Angles can be formed from two ray lines that have the same starting point

Commonly used terms include foot angle, corner point, and angle size

The magnitude of the angle is usually expressed in degrees

Naming angles can be with one letter according to the vertex or with three letters with the vertex placed between two other letters

There are several steps used to copy the BAC angle:

  • 1. Draw the DE line
  • 2. Draw a circle using the circle tool with center A. The circle will intersect the lines BA and BC at points F and G
  • 3. Use the segment tool to create a segment from the circle radius that has been created
  • 4. Use the Compass tool and select the segment from the AG radius
  • 5. Make a circle with center point D, with the same radius as AG
  • 6. Mark the intersection of the circle with the intersection of the DE as H
  • 7. Create the FG segment, and use the compass tool to select the FG segment
  • 8. Create a circle with center H, which will intersect the circle with center D earlier at the point I
  • 9. Draw the DI line

Then the BAC  is congruent to the HDI  

<h3>Learn more</h3>

circumference of the circle

brainly.com/question/8929610

chord, diameter

brainly.com/question/9969022

the steps for constructing a copy of an angle  

brainly.com/question/4292471

Keywords: circle, copy of an angle, segment tool, compass tool, radius

8 0
2 years ago
Read 2 more answers
Albert Abbasi, VP of Operations at Ingleside International Bank, is evaluating the service level provided to walk-in customers.
In-s [12.5K]

Answer:

The probability that Albert's sample of 64 will have a mean between 13.5 and 16.5 minutes is 0.9973.

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Let X the random variable that represent interest on this case, and for this case we know the distribution for X is given by:

X \sim N(\mu=15,\sigma=4)  

And let \bar X represent the sample mean, the distribution for the sample mean is given by:

\bar X \sim N(\mu,\frac{\sigma}{\sqrt{n}})

On this case  \bar X \sim N(15,\frac{4}{\sqrt{64}})

Solution to the problem

We are interested on this probability

P(13.5  

If we apply the Z score formula to our probability we got this:

P(13.5

=P(\frac{13.5-15}{\frac{4}{\sqrt{64}}}

And we can find this probability on this way:

P(-3

And in order to find these probabilities we can find tables for the normal standard distribution, excel or a calculator.  

P(-3

The probability that Albert's sample of 64 will have a mean between 13.5 and 16.5 minutes is 0.9973.

7 0
2 years ago
What additional information would prove that LMNP is a rectangle? The length of LM is and the length of MN is . The slope of LP
kumpel [21]

Answer:

The correct answer is diagonals are equal and bisect each other.

Step-by-step explanation:

A rectangle is a quadrilateral with opposites sides equal in length and all interior angles equal to 90°. Opposite sides are parallel and adjacent sides are perpendicular. Diagonals in a rectangle are equal in length and they bisect each other. If we want to draw a circumcircle, then the point of intersection of these diagonals give the circumcenter.

7 0
2 years ago
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A 12 oz bottle of clean green dish soap is $1.09 while a 20 oz bottle cost 1.99 which is the better to buy
Jlenok [28]

The 12 oz

Step-by-step explanation:

The twelve ounce because if you buys two of them its 2.18 and youll have four more ounces for only 19 more cents than the 20oz

4 0
2 years ago
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