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777dan777 [17]
3 years ago
6

Consider the distribution of exam scores​ (graded from 0 to​ 100) for 86 students when 38 students got an​ A, 28 students got a​

B, and 20 students got a C. Complete parts​ (a) through​ (d) below.
a. How many peaks would you expect for the​ distribution?
Mathematics
1 answer:
Bond [772]3 years ago
5 0

<u>Answer:</u>

There is only 1 peak in this distribution.

<u>Step-by-step explanation:</u>

In the distribution of exam scores (graded from 0 100)  for 86 students 38 students got an A, 28 students got a B, and 20 students got a C.

a) Since, 38 > 28 > 20 , there is only 1 peak for this distribution.  

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Pls help
joja [24]

Given:

Minni is arranging 3 different music CDs in a row on a shelf.

To find:

The sample space for the arrangement of a jazz CD (J), a pop CD (P), and a rock CD (R).

Solution:

We know that the total number of ways to arrange n items is n!.

Minni is arranging 3 different music CDs in a row on a shelf. So, the total number of ways is:

3!=3\times 2\times 1

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The sample space for the arrangement of a jazz CD (J), a pop CD (P), and a rock CD (R) is:

{JPR, JRP, PJR, PRJ, RJP, RPJ}

Therefore, the required sample space is {JPR, JRP, PJR, PRJ, RJP, RPJ}.

5 0
3 years ago
In the expression (x2 + 3), the base is
hichkok12 [17]
X is the base of the exponent.
8 0
4 years ago
Which is the solution to the inequality?
n200080 [17]

y < –12

Solution:

Step 1: Given inequality is y + 15 < 3.

To find the solution to the inequality.

Step 2: Subtract –15 on both sides to equal the expression.

⇒ y + 15 –15 < 3 –15

Step 2: Using addition identity property, any number adding with zero gives the number itself.

⇒ y + 0 < –12

⇒ y < –12

Hence the solution to the inequality is y < –12.

4 0
3 years ago
Read 2 more answers
Chapter 1: Quadrati
Bad White [126]

Answer:

mid point of AB (0.5 , 0)

Step-by-step explanation:

2x + 5y = 1      2x = 1 - 5y

y = 2xy+ 5 = (1 - 5y)*y + 5 = y - 5y² + 5

y-y = y - 5y² + 5 - y = - 5y² + 5

0 = - 5y² + 5

5y² = 5

y² = 1

y = 1 or y = -1

if y = 1       x = 1/2 (1 - 5) = -2   .... point A (-2 , 1)

if y = -1      x = 1/2 (1 + 5) = 3   ..... point B (3 , -1)

mid point of AB (x' , y') :  x' = 1/2 (x₁ + x₂) = 1/2 (-2 + 3) = 1/2

                                        y' =  1/2 (y₁ + y₂) = 1/2 (-1 + 1) = 0    

8 0
3 years ago
Suppose the trinomial x2 + 4x + 3
Zanzabum

Answer:

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Step-by-step explanation:

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7 0
3 years ago
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