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sukhopar [10]
3 years ago
6

You are a personnel director and are interested in predicting the Number of Shares of Company Stock (Y) using the Number of Year

s Employed with the Company (X). You randomly selected 8 employees and found that the average number of shares is 525 and the average number of years employed is 22.5. If the slope (b1) is 20.0, what is the least squares estimate of the intercept (b0)
Mathematics
1 answer:
hoa [83]3 years ago
8 0

Answer:

intercept=b0=75

Step-by-step explanation:

The least squares estimate of the intercept b0 can be computed as

b0=ybar-b1*xbar.

ybar=average number of shares of company stock=525.

xbar= average number of years employed=22.5.

slope=b1=20.

Thus,

intercept=b0=ybar-b1*xbar

intercept=b0=525-20*22.5

intercept=b0=525-450

intercept=b0=75.

Thus, the estimate of intercept b0=75.

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What is -6x-7x? i don't understand how to do it please teach me how to solve this
Aloiza [94]

<u>How to do Negative Addition</u>

Negative Addition is almost like Positive addition. The only catch in Negative Addition is that it is like subtracting. Let me make this clearer. If you draw a number line, with the positives and the Negatives, it will look somewhat like this. (Attachment down below). As you see, the Positives are increasing to the right, but the Negatives are increasing to the left.

When you do addition, you increase right? Like you have 8+4 which is 12. In positive addition you increase to the right, (look on number line). So, if you reverse it to -8+4 you would have to increase to the right, not the left. -8+4 is not -12 because when you add, you increase not decrease. (-12 is smaller than -8 and 4).

So that means -8+4 is -4.

Trick: Subtraction

Another way to think about it is replacing the addition sign to a minus sign then make the negative go away. So, we get 8-4 which is 4. And then we put the negative sign at the 4, so we get -4.

If you don't understand this, plz tell me

<u>Solving your Problem</u>

1) Take out the X to make it simple (Later we are going to add it back

2)Draw a number line to help you (Optional)

3) Use the subtraction Trick (Optional, but imma use it)

4) 6-7= -1 (Make that positive)  

5) The answer is 1x

I hope this helped if you want here is some practice questions to get you ready and comfortable with this skill

Ps. Brianlist Would help

Practice Work~

1) -3+2

2) -10+9

3)-150+100

4) 60+-200

3 0
2 years ago
what do the average rates of change of the function y= x+2 over the intervals {-2,0],[0,3], and [-2,3] indicate about the functi
kakasveta [241]

Answer:

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Step-by-step explanation:

<u>Given function:</u>

  • y = x + 2

It is a line with the slope of 1.

Average rate of change is same in any interval of the linear function and it equals to the rate of change or slope of the line.

You can calculate the average rate of change in the given intervals and you will always get the value of 1.

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weqwewe [10]

Answer:

ye

Step-by-step explanation:

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3 years ago
The ratio of customers who purchase items with coupons to customers who don't use coupons is 6 to 16. If 9 customers use coupons
Irina-Kira [14]

Answer:

24 customers will not use coupons.

Step-by-step explanation:

Number of customers who use coupons = 9

Number of customers who don't use coupons = x

Ratio of customers who use coupons to customers who don't use coupons = 6:16

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x=\frac{9\times 16}{6}=24

24 customers will not use coupons.

3 0
3 years ago
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