1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Rashid [163]
4 years ago
8

Suppose that you are conducting a survey on how many students have blue eyes in each first period classroom at Garfield Middle s

chool. The mean number of blue-eyed students is 6, and the standard deviation is 2. Mr. Garcia's first period history class has 10 students with blue eyes. What statement is true?
The number of blue-eyed students in Mr. Garcia's class is 2 standard deviations to the right of the mean,

The number of blue-eyed students in Mr. Garcia's class is 2 standard deviations to the left of the mean,

The number of blue-eyed students in Mr. Garcia's class is 4 standard deviations to the right of the mean,

The number of blue-eyed students in Mr. Garcia's class is 4 standard deviations to the left of the mean
Mathematics
1 answer:
rusak2 [61]4 years ago
4 0

Answer:

  • <u>The correct statement is the first one: </u><u><em>The number of blue-eyed students in Mr. Garcia's class is 2 standard deviations to the right of the mean</em></u><em> </em>

<em />

Explanation:

To calculate how many<em> standard deviations</em> a particular value in a group is from the mean, you can use the z-score:

      z-score=(x-\mu )/\sigma

Where:

  • z-score is the number of standard deviations the value of x is from the mean
  • \mu  is the mean
  • \sigma  is the standard deviation

Substitute in the formula:

       z-score=(10-6)/2=4/2=2

Which means that <em>the number of blue-eyed students in Mr. Garcia's class is 2 standard deviations</em> above the mean.

Above the mean is the same that to the right of the mean, because the in the normal standard probability graph the central value is Z = 0 (the z-score of the mean value is 0), the positive values are to the right of the central value, and the negative values are to the left of the central value.

Therefore, the correct statement is the first one: <em>The number of blue-eyed students in Mr. Garcia's class is 2 standard deviations to the right of the mean, </em>

You might be interested in
Which equation is a function
suter [353]
The answer is A!! Hope I helped
5 0
3 years ago
Four baskets contain scented soaps. The baskets contain 9, 9, 11, and 15 soaps. If the soaps are divided evenly among the basket
jeka94

Answer:

11

Step-by-step explanation:

9+9+11+15 is 44 44/4 is 11

5 0
3 years ago
A door is 8 feet tall and 4 feet wide. What is the area?
zysi [14]

Answer:

32

Step-by-step explanation:

a door is rectangular in shape

area = length × breadth

8 × 4

32

7 0
3 years ago
Read 2 more answers
The probability that a given urine sample analyzed in a pathology lab contains protein is 0.73 (event A). The probability that t
Ostrovityanka [42]
The right answer for the question that is being asked and shown above is that: "e.Events A and B are dependent because P(A|B) = P(A)." The probability that a sample contains protein, given that albumin is detected, is 1. The statement that is true is this e<span>vents A and B are dependent because P(A|B) = P(A).</span>
3 0
3 years ago
I need help with this problem if you can help please tell me what you did so I can understand please :)
balu736 [363]

The perimeter is 20 units

Step-by-step explanation:

The end-point of a side of square can be used to calculate length of a side. And the side will be used to calculate the perimeter.

Given

(3,-1) and (7,2)

Let

(3,-1) = (x1,y1)

(7,2) = (x2,y2)

We have to calculate the distance

The formula for distance is:

d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

Let s be the side of a square

then,

s=\sqrt{(7-3)^2+(2-(-1))^2}\\s=\sqrt{(4)^2+(2+1)^2}\\=\sqrt{16+(3)^2}\\=\sqrt{16+9}\\=\sqrt{25}\\=5\ units

The side of square is 5 units. Then,

Perimeter=P=4s\\=5*4\\=20\ units

The perimeter is 20 units

Keywords: Perimeter, Square

Learn more about perimeter at:

  • brainly.com/question/10941043
  • brainly.com/question/10978510

#LearnwithBrainly

6 0
3 years ago
Other questions:
  • Postulates need to be proven.
    5·2 answers
  • 38217 to 2 significant figure
    5·2 answers
  • A submarine moved from the water surface at a speed of -20 m per minute . How far is the
    8·1 answer
  • What would be the answer for this.
    5·1 answer
  • Answer it plz! I need help!
    7·2 answers
  • What percent of 71 is 90?<br> of 71 is 90.
    11·2 answers
  • Which of the following shows the greatest percent increase?
    12·1 answer
  • PLEASE HELP QUICKLY!!!
    5·1 answer
  • Which is the value of this expression when a = 5 and k = negative 2?
    5·1 answer
  • Cuanto vale d+2c-(3a-2b) si a=2,b=-3,c=1,d=-2
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!