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dangina [55]
3 years ago
10

Which or the following is not a possible value for the correlation coefficient (r)?

Mathematics
2 answers:
Reil [10]3 years ago
6 0
The correct answer is 2– it is NOT a possible value for correlation coefficient (r) because the value of “r” must always be between +1 and –1.
VladimirAG [237]3 years ago
4 0
<h3>Answer:  A) 2</h3>

Explanation:

The correlation coefficient r has this range of values

-1 \le r \le 1

which can be stated as "r is between -1 and 1, including both endpoints".

As you can see, r = 2 is outside this range and not a possible correlation coefficient. The largest r can get is r = 1 to indicate perfect positive linear correlation.

On the other end of the spectrum, r = -1 means perfect negative linear correlation. In between, r = 0 means no linear correlation at all.

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If 33% of the members of Sweetheart Union sign petitions to decertify the union, the National Labor Relations Board will call an
Elis [28]

Answer:

There is no need to call for election.

Step-by-Step Explanation

Surveys are based on probability or statistics. It serves as a standard tool for experimental research in marketing, social sciences and official data statistics.

Since 8 out of 40 members of the Sweetheart Union will sign the petition, the percentage of those who will sign the petition is calculated below:

\frac{8}{40}*100=20\%

Based on the sample survey, only 20 percent of the members will sign the petition. Since, in the sample, the number of those who will sign is less than 33%, the union should be told that there is no need for the National Labor Relations Board to call for the election.

5 0
4 years ago
If i have 480 grams of pasta for 4 people how many kilograms will i need for 14 people
Afina-wow [57]

\bf \begin{array}{ccll} \stackrel{pasta}{grams}&people\\ \text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\ 480&4\\ g&14 \end{array}\implies \cfrac{480}{g}=\cfrac{4}{14}\implies \cfrac{480}{g}=\cfrac{2}{7} \\\\\\ \cfrac{480\cdot 7}{2}=g\implies 1680=g

now, there are 1000 grams in one Kilogram, so in 1680 grams, there are 1680/1000 Kilograms, namely 1.680.

7 0
3 years ago
A basketball player has a 50% chance of making each free-throw. What is the probability that the player makes at least 11 out of
vitfil [10]

Answer:

100/2048=0.048828125%

Step-by-step explanation:

He has a 50% chance of making each free-throw, so 1/2*1/2*1/2*1/2*1/2*1/2*1/2*1/2*1/2*1/2*1/2=1/(2^11)=1/2048

to get a percentage you time by 100 to get 100/2048

8 0
3 years ago
Determine whether the following value could be a probability<br> 0.12
Luda [366]

Answer:

Yes, it could be a probability

Step-by-step explanation:

The probability of an event HAS to be between the numbers 0 and 1. Not less than 0, not greater than 1. The number 0.12 is between 0 and 1, thus, making it a valid probability.

7 0
2 years ago
Simplify 5 with the power of 3 and 2.5 with the power of 2. Help fast please!!!
Mars2501 [29]
5^3=125; 2.5^2=6.25. So the answer to your first question is 125, and the second one is 6.25
6 0
3 years ago
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