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oksian1 [2.3K]
3 years ago
15

A store manager asks every 25th person to enter the store which sales they like the best. Which type of data collection method i

s described in this situation?
A. observational study
B. experiment
C. sample survey
D. None of the choices are correct
Mathematics
1 answer:
Makovka662 [10]3 years ago
4 0

Answer:

D. None of the choices are correct.

Step-by-step explanation:

Systematic sampling refers to a method of random sampling during which sample members are extracted from a larger population and then collecting corresponding observations using a constant interval between samples taken. This interval, called the sampling interval, is measured by deducting the size of the population by the required sample size. As per the question, the store manager asks every 25th person about the sales which is a classic example of systematic sampling.

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daser333 [38]

Answer:

The monopolist's net profit function would be:

N(y)=198\,y\,-\,2.5\,y^2

Step-by-step explanation:

Recall that perfect price discrimination means that the monopolist would be able to get the maximum price that consumers are willing to pay for his products.

Therefore, if the demand curve is given by the function:

P(y)=200-2y

P stands for the price the consumers are willing to pay for the commodity and "y" stands for the quantity of units demanded at that price.

Then, the total income function (I) for the monopolist would be the product of the price the customers are willing to pay (that is function P) times the number of units that are sold at that price (y):

I(y)=y*P(y)\\I(y)=y\,(200-2y)\\I(y)= 200y-2y^2

Therefore, the net profit (N) for the monopolist would be the difference between the Income and Cost functions (Income minus Cost):

N(y)=I(y)-C(y)\\N(y)=(200\,y-2y^2)-(2y+0.5y^2)\\N(y)=198\,y\,-\,2.5\,y^2

5 0
3 years ago
A Real estate agent receives a commission of 9% on property sold through her. What is her commission on a sale of $42,000?
NISA [10]

Answer:

$ 3780 will be commission

Step-by-step explanation:

as the commission is 9 % of the total amount of property sold

property sold for = 42000 $

9 % of the total property= 0.09 x 42000

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3 0
3 years ago
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Chandler needed 10 gallons of gas last week. This week, Chandler ended up needing 60% more than that amount.How much gas is that
timama [110]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

Square Root:

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I hope it's helpful!

8 0
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The cake store is having a 25\%25%25, percent off sale on all of its cakes. If the cake you want regularly costs \$9$9dollar sig
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25% = 25/100 = 0.25

9*0.25 = 2.25.

You save $2.25 with the discount. 
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3 years ago
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