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Fudgin [204]
3 years ago
7

Exhibit 15-2A regression model between sales (y in $1000s), unit price (x1 in dollars) and television advertisement (x2 in dolla

rs) resulted in the following function:ŷ = 7 − 3x1 + 5x2For this model, SSR = 3500, SSE = 1500, and the sample size is 18.The coefficient of x2 indicates that if television advertising is increased by $1 (holding the unit price constant), sales are expected to _____.
Mathematics
1 answer:
Semmy [17]3 years ago
7 0

Answer:

Sales are expected to increase positively.

Step-by-step explanation:

The model is y =7-3*X1+5*X2

Here, y is the depended variable and X1 and X2 are independent variable.  

Holding the unit price constant X2 (television advertisement) is increase by $1 dollar

SSR= 3500

SSE=1500

So, TSS = SSR+SSE = (3500+1500) = 5000

Now r^2= 1 - (SSR/TSS) = 1 - (3,500/5,000) = 1 - 0.70 = 0.30

So, the sample correlation coefficient (r) = (0.3)^(1/2) = 0.547

We can conclude that sample correlation indicates a strong positive relationship.

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Monica regularly records her favorite television show. Each episode of the show requires 3.5% of the total capacity of her video
navik [9.2K]

Answer:

82.5%

Step-by-step explanation:

Her favorite television show is recorded regularly by Monica.

If the total memory of her video recorder is 100% then 3.5% is taken by each episode of the show.  

If Monica records all the five episodes of this week, then this will take ( 3.5 × 5 ) = 17.5 % of the memory of her video recorder.

Therefore, there will be more ( 100 - 17.5 ) = 82.5% free space in the memory of her video recorder. (Answer)

5 0
3 years ago
Four friends are on a basketball team. During a game, each friend kept track of how many shots they attempted and how many of th
mario62 [17]

Answer:

Henry has a best record for the number of shots made.

Step-by-step explanation:

It is provided that Henry made 0.45 or 45% of his shots.

And Trevor missed 58% of his shots, i.e. Trevor made 42% of his shots.

There is no information about Allison's and Arthur's probability of making the shot.

So, only based upon Henry and Trevor, it can be seen clearly that Henry has a best record for the number of shots made.

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
As a plane takes off it ascends at a 20 degree angle of elevation. If the plane has been traveling at an average rate of 290 ft/
poizon [28]

Given :

As a plane takes off it ascends at a 20 degree angle of elevation.

If the plane has been travelling at an average rate of 290 ft/s and continues to ascend at the same angle.

To Find :

How high is the plane after 10 seconds.

Solution :

Distance travelled by plane, D = 2900 ft.

Angle of elevation, Ф = 20°.

Height gained is given by :

H = Dsin\ \phi

H = 2900 × sin 20°

H = 991.86 ft.

Therefore, height of plane after 10 seconds is 991.86 ft.

Hence, this is the required solution.

8 0
3 years ago
Four people have measured the height of a wall using different methods. Their results are shown in the table. Order their measur
slavikrds [6]

Answer:

5/2, 2.6, 1 + sqrt(3), sqrt(8)

Step-by-step explanation:

Use a calculator:

sqrt(8) = 2.83

5/2 = 2.5

2.6 = 2.6

1 + sqrt(3) = 2.73

Answer:

5/2, 2.6, 1 + sqrt(3), sqrt(8)

3 0
3 years ago
Mark is solving the following system.
fredd [130]
I think its he didnt eliminate the same variables
6 0
3 years ago
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