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NeX [460]
3 years ago
6

Two math questions plz

Mathematics
1 answer:
lord [1]3 years ago
3 0

we know that

<u>The correlation coefficient</u> is a measure of linear association between two variables. Values of the correlation coefficient are always between −1 and +1.

Using a mathematical tool-------> Excel software

Find the correlation coefficient

see the attached table N 1 and N 2

the answer is

Part 1) The correlation coefficient of the data is 0.02

Part 2) The correlation coefficient of the data is 0.98

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When finding the margin of error for the mean of a normally distributed population from a sample, what is the critical probabili
svlad2 [7]

Critical probability is the essentially cut-off value. The critical probability when the confidence level of 58% is 0.79.

<h3>What is the critical probability?</h3>

Critical probability is the essentially cut-off value that defines the region where the test statistic is unlikely to lie.

As it is given that the confidence level is 58%. therefore, in order to calculate the critical probability, we need to calculate the margin of error within a set of data, and  it is given by the formula

\rm Critical\ Probability, (P*) = 1-\dfrac{\alpha }{2}

where the value of the α is expressed as,

\alpha= 1 -\dfrac{\rm Confidence\ interval}{100}

Now, as the confidence interval is given to us, therefore, the value of the alpha can be written as,

\alpha= 1 -\dfrac{\rm 58\%}{100} = 0.42

Further, the critical probability, assuming a confidence level of 58% is,

\rm Critical\ Probability, (P*) = 1-\dfrac{\alpha }{2}\\\\\rm Critical\ Probability, (P*) = 1-\dfrac{0.42}{2} = 0.79

Hence, the critical probability is 0.79.

Learn more about Critical Probability:

brainly.com/question/5625386

6 0
2 years ago
Which of the following is equal to 3m – 4n+5m+3n
Bas_tet [7]

Answer: 8m-1n

Step-by-step explanation:

add 3m + 5m to get 8m

-4n+3n is -1n

thus the answer being 8m-1n

5 0
3 years ago
PLS HELPP WHAT IS THE ANSWER???
Elena-2011 [213]

Answer:

-220

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Solve the linear equation for X: x + 6 = -7
Georgia [21]

Answer:

x= -13

Step-by-step explanation:

x + 6 = -7

Subtract 6 from both sides of the eqaution

x+6 - 6= -7 -6

Simplify

x+6 - 6= -7 -6

x= -7 -6

Subtract the numbers

x= -13

6 0
3 years ago
How old were the twins who played in the recital?
inna [77]
To find out how old the twins were that were in the recital you need to be able to interpret a stem and leaf plot.  The number of the left gets placed with each number on the right to create a number in the data set.  See the key for an example.  This means there were 2 people that were 5 years old making them the twins!
3 0
3 years ago
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