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lord [1]
2 years ago
9

A poll solicits a large number of college undergraduates for information on the following variables: the name of their cell phon

e provider (AT&T, Verizon, and so on), the numbers of minutes used last month (200, 400, for example), and their satisfaction with the service (Terrible, Adequate, Excellent, and so forth). What is the level of measurement for each of these three variables?
Mathematics
1 answer:
Sidana [21]2 years ago
7 0

Answer:

1)<u>Nomina</u>l:-the name of their cell phone provider (AT&T, Verizon, and so on),

2)<u>Ratio</u>:- the numbers of minutes used last month (200, 400, for example),

3) <u>Ordinal</u>:- (Terrible, Adequate, Excellent, and so forth).

Step-by-step explanation:

The nominal level of measurement classifies data into mutually exclusive categories in which no order or ranking is imposed on the data set.

An example gathering information on college undergraduates base on the name of their cell phone provider (AT&T, Verizon, and so on).

The ratio level measures variables like time,weight, height, etc.

An example is the numbers of minutes used last month making phone calls by the college students. (200, 400, for example)

The ordinal level classifies data into categories that can be ranked (ordered)

Example ranking the satisfaction derived from the use of the service providers as  (Terrible, Adequate, Excellent, and so forth).

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Complete the sentence. the roots of the equation x^2 - 8x - 48 = 0 are -4 and *blank*
prisoha [69]

Answer:

12 is the answer.

Step-by-step explanation:

The best way to get the roots of the equation is to factorize the equation but when the factors are not possible then we should apply the quadratic equations formula to get the value of x.

Now we will try to factorize

x² - 8x -48 = 0

Now we multiply coefficient of highest degree term and constant term

48×1 = 48 which may be factored in 12×4. 8×6, 24×2.

Now we will choose 12×4 out of three because the 12-4 = 8 which is the coefficient of x.

Now its simple.

x²-12x + 4x -48 = 0

x(x -12) + 4(x-12) = 0

(x +4)(x-12) = 0

Therefore roots are x + 4 = 0

x = -4

and x - 12 = 0

x = 12

So the answer is 12.

8 0
2 years ago
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Ben uses 3/12 pound of strawberries and 2/12 pound of blueberries
Gennadij [26K]

Answer:

what's the rest of the question

Step-by-step explanation:

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4 0
2 years ago
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PQ= 2x +1 and QR= 5x - 44; find PQ
Lena [83]

2x+1=5x-44 that would be your equation

next start to simplify 

subtract 1 from both sides so you are left with 2x=5x-45

then subtract 5x from both sides and you have -3x=-45

then finally divide -3 from -45 to get x=15

6 0
2 years ago
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Convert to vertex form:<br><br> y=2x^2-8x+1
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I’ll try and help u in 6 years
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2 years ago
The word geometry has eight letters. three letters are chosen at random. what is the probability that two consonants and one vow
olga nikolaevna [1]

Answer:

0.536 is the required probability.

Step-by-step explanation:

 We have been given the word the word "GEOMETRY"

we have to find the probability that two consonants and one vowel are chosen:

Number of consonants are: 5

Number of  vowels are: 3

Hence, The required probability is: \frac{^5C_2\cdot ^3C_1}{^8C_3}

Using: ^nC_r=\frac{n!}{(r!)(n-r)!}

\frac{\frac{5!}{3!\cdot 2!}\cdot\frac{3!}{1!\cdot 2!}}{\frac{8!}{3!\cdot 5!}}

Simplifying the above expression:

\frac{\frac{5\cdot 4\cdot 3!}{3!\cdot 2}\cdot {\frac{3\cdot 2!}{2!}}}{\frac{8\cdot 7\cdot 6\cdot 5!}{5!\cdot 3\cdot 2}}

Further simplification after cancelling out the common terms we get:

\Rightarrow \frac{30}{56}=\frac{15}{28}=0.5357=0.536

Hence, Option 1 is correct.


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2 years ago
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