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xeze [42]
4 years ago
10

Regression analysis was applied between sales data (in $1000s) and advertising data (in $100s), and the following information wa

s obtained. ŷ = 12 + 1.8x n = 17 SSR = 225 SSE = 75 Sb1 = 0.2683 Refer to Exhibit 14-3. Based on the above estimated regression equation, if advertising is $3,000, then the point estimate for sales (in dollars) is _____.
Mathematics
1 answer:
Romashka-Z-Leto [24]4 years ago
8 0

Answer:

$66,000

Step-by-step explanation:

The F statistic = 45

The t statistic = 6.709

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The sum of 4x^2 + x - 8 and x^2 + 9 can be expressed as
ad-work [718]

Answer:

-4x+2=9 would be the answer I think

6 0
3 years ago
Is x=5 a solution to the equation 19-x=14?
Musya8 [376]

Answer:

x = 5

Step-by-step explanation:

= 19 - x = 14

= 19 - x - 19 = 14 - 19

= -x = -5

= -x/-1 = -5/-1x

x = 5

Hope this Helps :D

7 0
2 years ago
Please i don't understand set theory in mathematics
nordsb [41]

Set theory is the mathematical theory of well-determined collections, called sets, of objects that are called members, or elements, of the set. ... The axioms of set theory imply the existence of a set-theoretic universe so rich that all mathematical objects can be construed as sets

For example, if A = {1, 2, 3} and B = {1, 2, 3, 4, 5} then A Í B (Í means is a subset of). If A = {1, 2, 4, 8}, then n(A) = 4. This is because n(A) means the number of members in set A. The universal set is the set of all sets.

6 0
3 years ago
What is xz and xy?.....................
Fittoniya [83]
It is the angles and also how long that segment of the triangle



6 0
3 years ago
Problem number 7 trigonometry
Natasha_Volkova [10]
7) - 1

tan <BAD = BD / AD

BC = √(64 + 36)
BC = √100
BC = 10

now you can solve BD
BD/6 = 6/10
BD = 6*6 / 10
BD = 36/10
BD = 3.6

AD = √36 - 12.96
AD =  √23.04
AD = 4.8

tan <BAD = BD / AD
tan <BAD = 3.6 / 4.8
tan <BAD = 0.75

7) - 2

cos <DAC + cos <DAB

as you know cos = Adj / Hypo

cos <DAC = AD/AC
cos <DAC = 4.8 / 8
cos <DAC = 0.6

cos <DAB = AD / AB
cos <DAB = 4.8/6
cos <DAB = 0.8

so
cos <DAC + cos <DAB = 0.6 + 0.8
cos <DAC + cos <DAB = 1.4

hope it helps


8 0
3 years ago
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