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prohojiy [21]
4 years ago
12

A local gymnasium is trying to find out what additional classes they should offer. They send out 50 surveys to a random selectio

n from all of their customers and follow up with phone calls to those that they don't get a response from. Is this a good way for the gym to collect data? A) No, they should send out surveys to all of their customers.
B) Yes, by randomly selecting them they will get a representative sample.
C) No, they should just survey the next 50 customers that come to the gym.
D) Yes, but they shouldn't follow up with phone calls. Just look at the ones
Mathematics
1 answer:
Alona [7]4 years ago
6 0

Answer:

I'm pretty sure the answer is B I hope it's right

Step-by-step explanation:

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Veseljchak [2.6K]

Answer:

z = 0 ; 1

Step-by-step explanation:

3 + 8 = 11 < 12

so z must be either 1 or 0

4 0
3 years ago
What is a situation in which a polynomial model might make sense, and why?
ololo11 [35]

Answer and Step-by-step explanation:

Polynomial models are an excellent implementation for determining which input element reaction and their direction. These are also the most common models used for the scanning of designed experiments. It defines as:

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It is a quadratic (second-order) polynomial model for two variables.

The single x terms are the main effect. The squared terms are quadratic effects. These are used to model curvature in the response surface. The product terms are used to model the interaction between explanatory variables where Є is an unobserved random error.

A polynomial term, quadratic or cubic, turns the linear regression model into a curve. Because x is squared or cubed, but the beta coefficient is a linear model.

In general, we can model the expected value of y as nth order polynomial, the general polynomial model is:

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7 0
3 years ago
Divide 405 in to the ratio 3:12<br> give answer in the form ... and ...
OLEGan [10]

Answer:

81:324

Step-by-step explanation:

3+12=15

405 div 15 =27

3 times 27 = 81

12 times 27 = 324

81:324

6 0
3 years ago
Tom had $56. He bought a soda for $2 and 2 cookies for $3. Which expression corectly shows the total money Tom has left
frutty [35]

$56 − (−$2) + (−$3)=51

4 0
3 years ago
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kari74 [83]

Answer:

4 right angles.

Step-by-step explanation:

1 right angle: 90 degrees

360/90= 4

6 0
3 years ago
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