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4vir4ik [10]
3 years ago
13

"the distribution of means is the correct comparison distribution when"

Mathematics
1 answer:
alexandr402 [8]3 years ago
4 0

The distribution of means is the correct comparison distribution when

Answer: The distribution of means is the correct comparison distribution when there is more than one person in a sample.

The distribution of the sample means is also called the sampling distribution of mean. It is most appropriate when we take a random sample of size n from the population of size N. The distribution of the sample means will follow normal distribution with mean = \mu and standard deviation = \frac{\sigma}{\sqrt{n}}


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Debate the following statement: "Correlation means Causation." Determine whether this statement is true or false, and provide re
Pachacha [2.7K]

Answer:

Thats FALSE.

The concept CORRELATION not automatically means CAUSATION.

Step-by-step explanation:

Previous concepts

The correlation coefficient is a "statistical measure that calculates the strength of the relationship between the relative movements of two variables". It's denoted by r and its always between -1 and 1.

And in order to calculate the correlation coefficient we can use this formula:

r=\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{[n\sum x^2 -(\sum x)^2][n\sum y^2 -(\sum y)^2]}}  

Solution to the problem

Some useful concepts are:

Correlation is a statistical measure described with a number that describes the size and direction of a relationship between two or more variables. The correlation between variables, NOT mean that the change in one variable is the cause of the change in the values of the other variable.

Causation is a term refered to one event as the result of the occurrence of the other event for example, there is a causal relationship between event A and B like a cause and effect. One important thing to mention here is that the causation is not an easy concept to measure.

"The difference between the two types of relationships are easy to identify since one can be measured with a numerical value and the other no (Here is one example: smoking causes an increase in the risk of developing lung cancer), or it can correlate with another ( smoking is correlated with alcoholism, but it does not cause alcoholism)".

So is clear that the concept CORRELATION not automatically means CAUSATION.

6 0
3 years ago
Let f(x) = −x2 + ax + b. Determine the constants a and b such that f has a relative maximum at x = 3 and the relative maximum va
Elan Coil [88]

Answer:

Step-by-step explanation:

5 0
3 years ago
The episodes of a TV program are each 50 minutes long.
Nimfa-mama [501]

Answer:

3 hours 20 minutes

Step-by-step explanation:

first multiply 50 by how many episodes were watched

50 * 4 = 200

then devide it by 60 (60 minutes in an hr)

200 / 60 = 3 with a remainder of 1/3

meaning that it is 3 1/3 hours, to convert this into minutes, just devide a full hour (60 minutes) by 3

60 / 3 = 20

therefore the answer is 3 hours and 20 minutes

6 0
3 years ago
Someone please help me?
babymother [125]
(x-3)^2 + (y+5)^2 = 25

remove the ^2's from the left side:

(x-3) +(y+5) = sqrt(25)

(x-3) +(y+5) = 5

radius = 5

now solve for zero 's on the left side:

x-3 = 0   x = 3   (3-3=0)

y+5 = 0   y = -5  (-5 +5=0)

so center = (3,-5) and radius is 5

Answer is last one.


4 0
3 years ago
Jim goes to the store and buys 3 sodas for $1.29 each and a bag of chips for 1.59. What is Jim's subtotal?​
ASHA 777 [7]

Answer:

$5.46

Step-by-step explanation:

Total = 3*1.29 + 1.59

= 5.46

7 0
3 years ago
Read 2 more answers
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