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adelina 88 [10]
4 years ago
12

A community college announces that the correlation between college entrance exam grades and scholastic achievement was found to

be -1.08. On the basis of this you would tell the college that:______
Mathematics
1 answer:
pav-90 [236]4 years ago
8 0

Answer:

the college should hire a new statistician

Step-by-step explanation:

In statistics correlation is a measure of the linear relationship between two variables.

How closely related the two variables are gives the strength of the relationship.

Positive correlation occurs when an increase in the value of one variable results in an increase in the value of the other.

Negative correlation is when there is an inverse relationship. That is an increase in one variable results in a decrease in the other.

In the given scenario where there is a statistical analysis between exam grades and scholastic achievement, the relationship between them should be a positive one.

The higher the exam grades a student gets the higher his scholastic achievement.

However it is stated that correlation is -1.08. This implies an inverse relationship, which is not correct.

So the college should hire a new statistician who can give more accurate analysis

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2+3-6+0*4+1+2+3..........​
Nutka1998 [239]

Answer:

the ans is 6 it was a easy one

4 0
3 years ago
Read 2 more answers
2. A museum has an admission fee of $14 and averages 300 visitors per day. The museum board
dlinn [17]

Answer:

The answer to the questions asked is:

a) The maximum possible income for the museum is $4,840 per day.

b) The increase you must make to obtain the maximum income is $8 per ticket.

c) The income of the museum without increasing the fee is $4200.

Step-by-step explanation:

To solve all the questions asked, we must take into account the provided equation:

  • <u>R = -10x2 + 160x + 4200 </u>

The first question asks for the maximum income, that is, the maximum amount of money that can be obtained by making increases in the rate, despite the loss of people, so you must replace the X in the equation with values ​​until instead of increase decrease:

  • R = -10 (1) 2 + 160 (1) + 4200 = 4350
  • R = -10 (2) 2 + 160 (2) + 4200 = 4480
  • R = -10 (3) 2 + 160 (3) + 4200 = 4590
  • R = -10 (4) 2 + 160 (4) + 4200 = 4680
  • R = -10 (5) 2 + 160 (5) + 4200 = 4750
  • R = -10 (6) 2 + 160 (6) + 4200 = 4800
  • R = -10 (7) 2 + 160 (7) + 4200 = 4830
  • <u>R = -10 (8) 2 + 160 (8) + 4200 = 4840 </u>
  • R = -10 (9) 2 + 160 (9) + 4200 = 4830

As you can see, when the increase is $9, the income falls, so <u>the maximum income is $4,840, while it can be seen that it occurs with an increase of $8, which answers the second question</u>.

For the third question, that is, the income of the museum without increasing the fee, you must remember that the variable X is the increase in the fee, therefore, if you want to obtain the income without an increase, it must be given a value of zero to the variable inside the equation, with which we obtain:

  • <u>R = -10 (0) 2 + 160 (0) + 4200 = 4200</u>
3 0
4 years ago
What is the perimeter of polygon lmnpq
ratelena [41]

Answer:what is the perimeter of polygon lmnpq

Step-by-step explanation:

6 0
3 years ago
Simplify completely<br> x2 + 4x - 45<br> and find the restrictions on the variable.
malfutka [58]

Answer:

(x-5)/(x+1) and x cannot equal -1 because the denominator can't be zero.

Step-by-step explanation:

Factor the numerator:

(x+9)(x-5)

Factor the denominator:

(x+1)(x+9)

So you have

(x+9)(x-5)/(x+1)(x+9); see that you can cross out the (x+9) in both the numerator and denominator?

You're left with (x-5)/(x+1)

The only number that is restricted is -1, because that would make the denominator zero, which is a no no!!

4 0
4 years ago
Evaluate 3|-3|. <br><br>O 6 <br>O -9 <br>O -6 <br>O 9​
zysi [14]

Answer:

D) \:9

Step-by-step explanation:

3\left|-3\right|

Apply absolute rule: \left|-a\right|=a

\left|-3\right|=3

Multiply:

3\times3

=9

______________________

5 0
3 years ago
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