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harkovskaia [24]
3 years ago
13

3. When the line of best fit is found by hand, it is exact. O True O False

Mathematics
1 answer:
madam [21]3 years ago
6 0
True! If not then sorry.
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Write an algebraic expression for the phrase the product of 4 and s.
notka56 [123]

Answer: 4s

Step-by-step explanation:

Product means multiply

4 times s = 4s

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2 years ago
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A researcher working in a Human Resources department was interested in gender and sales figures so he conducted a t-test. The me
irina1246 [14]

Answer:

d = \frac{78.24 -66.25}{\sqrt{\frac{7^2 +7^2}{2}}}= 1.713

For the interpretation we consider a value for d small is is between 0-0.2, medium if is between 0.2-0.8 and large if is higher than 0.8.

And on this case 1.713>0.8 so we have a large effect size

This value of d=1.713 are telling to us that the two groups differ by 1.713 standard deviation and we will have a significant difference between the two means.

Step-by-step explanation:

Previous concepts

The Effect size is a "quantitative measure of the magnitude of the experimenter effect. "

The Cohen's d effect size is given by  the following formula:

d = \frac{\bar X_1 -\bar X_2}{\sqrt{\frac{s^2_1 +s^2_2}{2}}}

Solution to the problem

And for this case we can assume:

\bar X_1 =78.24 the mean for females

\bar X_2 =66.25 the mean for males

s_1 = s_2= 7 represent the deviations for both groups

And if we replace we got:

d = \frac{78.24 -66.25}{\sqrt{\frac{7^2 +7^2}{2}}}= 1.713

For the interpretation we consider a value for d small is is between 0-0.2, medium if is between 0.2-0.8 and large if is higher than 0.8.

And on this case 1.713>0.8 so we have a large effect size

This value of d=1.713 are telling to us that the two groups differ by 1.713 standard deviation and we will have a significant difference between the two means.

4 0
2 years ago
In which career would you most likely apply concepts from geometry ?
Pavlova-9 [17]

Answer:angels

Step-by-step explanation:

4 0
3 years ago
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Tony plans to deposit​ $1,000 at the end of each of the next three years. if his funds earn​ 5% compounded​ annually, how much w
coldgirl [10]
Answer= $632.98 in compunded interest 
7 0
3 years ago
Can you so me work for7\10-1\2
Rina8888 [55]
Well, 1/2 is equal to 5/10... so 7/10 - 5/10 is 2/10 because 7-5=2 :)
5 0
3 years ago
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