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Nadusha1986 [10]
2 years ago
11

The sales manager gathered information on the numbers of sales calls made and the number of copiers sold for a random sample of

sales representative. Is there a positive correlation between calls made and copiers? Test at the 0.05 level of significance. Determine the 90% prediction interval for 60 number of calls made. *
Calls,X Sold. Y
20 40
20 50
40 60
50 90
40 80
20 40
40 60
30 60
Mathematics
1 answer:
N76 [4]2 years ago
6 0

Answer:

b

Step-by-step explanation:

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x=4

Step-by-step explanation:

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B-1.6=(0.4) to the second power. SHOW WORK
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First, do 0.4 + 0.4. So, you can see what number you should get when you check your answer. For this, you should get 0.8

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Given that sinФ = 8/17 and cos Ф < 0:
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Answer:

1) The terminal side lies in quadrant 2

2) cosФ = -15/17

3) tanФ = -8/15

Step-by-step explanation:

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6 0
3 years ago
The monthly charge for a waste collection service is 1830 dollars for 100 kg of waste and 2460 dollars for 135 kg of waste. (a)
Ulleksa [173]

Answer:

C=18w+30

Step-by-step explanation:

We are given that The monthly charge for a waste collection service is 1830 dollars for 100 kg of waste

So, (x_1,y_1)=(100,1830)

We are also given that The monthly charge for a waste collection service is 2460 dollars for 135 kg of waste.

So, (x_2,y_2)=(135,2460)

We are supposed to find a linear model for the cost, C, of waste collection as a function of the number of kilograms, w.

So, we will use two point slope form :

Formula : y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)

Substitute the values

y-1830=\frac{2460-1830}{135-100}(x-100)

y-1830=18(x-100)

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y denotes the cost

x denotes the weight

So, Replace y with C and x with w

C=18w+30

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