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svp [43]
3 years ago
5

A consumer magazine rates televisions by identifying three levels of​ price, three levels of repair​ frequency, four levels of​

features, and three
levels of picture quality. How many different ratings are​ possible?
Mathematics
1 answer:
JulijaS [17]3 years ago
5 0

Answer:

10

Step-by-step explanation:

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A contractor has submitted bids on three state jobs: an office building, a theater, and a parking garage. State rules do not all
german

Answer:

The following are the answer to this question:

Step-by-step explanation:

In the given question the numeric value is missing which is defined in the attached file please fine it.  

Calculating the probability of the distribution for x:

\to f(x) = 0.19\  for \ x=14\\\\\to  f(x) = 0.29 \ for\ x=7\\\\\to f(x) = 0.38\  for \ x=1\\\\\to f(x)=0.14 \ for \ x=0\\

The formula for calculating the mean value:

\bold{ E(X)= x \times f(x)}

          =14 \times 0.19+7 \times 0.29+1 \times 0.38+0\times 0.14\\\\=2.66 + 2.03+0.38+ 0\\\\=5.07

\bold{E(X^2) = x^2 \times f(x)}

           =14^2 \times 0.19+7^2 \times 0.29+1^2 \times 0.38+0^2 \times 0.14 \\\\=196 \times 0.19+ 49 \times 0.29+1 \times 0.38+0 \times 0.14\\\\= 37.24+ 14.21+ 0.38+0 \\\\=51.83

use formula for calculating the Variance:

\to \bold{\text{Variance}= E(X^2) -[E(X)]^2}

                  = 51.83 - (5.07)^2\\\\= 51.83 -  25.70\\\\=26.13

calculating the value of standard deivation:

Standard Deivation (SD) = \sqrt{Variance}

                                          = \sqrt{26.13} \\\\=5.111

6 0
3 years ago
Write the equation of the line through the points (4,5) and (12,9)
Umnica [9.8K]

Answer:

 y=1/2+1

Step-by-step explanation:

1) Y2-Y1 over X2-X1

<u>9-5=4</u>

12-4=8

4/8 simplify the answer= 1/2

m=1/2

2) subtitute the simplification to one of the points.

y=mx+b

5=1(4)+b

5=4=b

1=b

y=1/2+1

7 0
4 years ago
Is 0.919191 a terminating or repeating decimal
nydimaria [60]
Repeating because its repeating 91.
6 0
3 years ago
The top question is the one i need help on (number 1)
dybincka [34]
8x8x8=512
hope this is  what its asking

6 0
4 years ago
Read 2 more answers
Kate is building a rectangular wall.the wall will be 332 bricks wide and 39 bricks tall how many bricks does she need to build t
Klio2033 [76]

Answer:

12948 bricks

Step-by-step explanation:

332*39=12948

5 0
4 years ago
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