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LiRa [457]
3 years ago
6

Of the statistical processes we have covered throughout this course, which would be most helpful to determine if study hours and

sleep could help estimate a student's test score?
Mathematics
1 answer:
Alika [10]3 years ago
5 0

Answer:

Pearson correlation coefficient

Explanation:

The Pearson correlation coefficient, also simply called correlation coefficient measures the linear correlation between two sets of data/variables, independent variables and dependent variable. A correlation coefficient may only be between -1 and 1 where +1 denotes a perfect positive correlation between variables(both variables increase together), 0 is no correlation, and -1 is perfect negative correlation between variables(one decreases while other increases).

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Jeremy read 243 pages on Saturday. He read 53 fewer pages on Sunday.
Kryger [21]

243 = the pages read on Saturday

243 - 53 = 190 = the pages read on Sunday

190 + 243 =  433 = total pages read

Answer = 433

8 0
3 years ago
Read 2 more answers
12. Zac wil spend $185.00, or 5%, of his budget on gasoline. Gas prices have increased, and he needs to adjust his budget. If he
weqwewe [10]
156 but a point in-between 15 and 6
6 0
3 years ago
Consider the equation 5x^2-10x+c=0. What values of c result in the equation having a complex solutions? Represent your answer on
stiv31 [10]

Answer:

When we have a quadratic equation:

a*x^2 + b*x + c = 0

There is something called the determinant, and this is:

D = b^2 - 4*a*c

If D < 0, then the we will have complex solutions.

In our case, we have

5*x^2 - 10*x + c = 0

Then the determinant is:

D = (-10)^2 - 4*5*c = 100 - 4*5*c

And we want this to be smaller than zero, then let's find the value of c such that the determinant is exactly zero:

D = 0 = 100 - 4*5*c

    4*5*c = 100  

       20*c = 100

            c = 100/20 = 5

As c is multiplicating the negative term in the equation, if c increases, then we will have that D < 0.

This means that c must be larger than 5 if we want to have complex solutions,

c > 5.

I can not represent this in your number line, but this would be represented with a white dot in the five, that extends infinitely to the right, something like the image below:

8 0
3 years ago
A city survey of two neighborhoods asked residents whether they would prefer a new playground or a dog park.
const2013 [10]

Answer:

so if it is asking about the exact percentage then the answer is B but if it is the percentage in all the answer is D.

Step-by-step explanation:  My reasoning behind is that 70 percent of the neighborhood wants a playground if it is 40 to 17

3 0
3 years ago
Read 2 more answers
What’s is a referent for a km
Afina-wow [57]

Answer:

km stands for kilometers

7 0
3 years ago
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