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nordsb [41]
3 years ago
7

I'm not sure how to get the answer can you help me?

Mathematics
1 answer:
Black_prince [1.1K]3 years ago
5 0

C and D are correct. Look how the letters correspond to each other.

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Which of the following scenarios demonstrates sampling bias? (A) To estimate the ethnic background distribution of residents of
ankoles [38]

Answer:

Option C.

Step-by-step explanation:

Sampling bias is a problem during the initial data gathering step of a survey.

When the first step is wrong, then the survey cannot produce non biased results.

The problem occurs when the design of the study is wrong the data collection procedure is wrong.

So, here answer seems C, because the starting point is not selected at random in this survey.

(C) Jean wants to estimate the mean amount of money spent on clothes per week by mall shoppers. She collects data from every 10th person entering a clothing store at the mall.

6 0
3 years ago
jason can type 275 characters in 5 minutes on his computer keyboard. at that rate, how many characters can he type in 20 minutes
Minchanka [31]

Answer:

1100 characters

Step-by-step explanation:

275 characters : 5 minutes

? characters : 20 minutes

5 x 4 = 20 minutes

275 x 4 = 1100 characters

5 0
3 years ago
Read 2 more answers
1. Find the exact value of cos (π radians). <br> 2. Find the exact value of sin (π radians)
valkas [14]

Answer:

  1. -1
  2. 0

Step-by-step explanation:

1. cos(π) = -1

2. sin(π) = 0

_____

It is useful to memorize the table below.

3 0
3 years ago
Which expression is equivalent to:<br>15x + 20y <br>5(4x+3y) <br>5(3x+4y) <br>5y(3x + 4)​
alexandr402 [8]

Answer:

5(3x+4y)

Step-by-step explanation:

5 0
2 years ago
Rita can make 8 cakes for a bakery each day. So far, she has orders for more than 32 cakes. Right now, Rita needs more than four
Andru [333]

Answer:

x > 4

Step-by-step explanation:

Calling x the number of days Rita needs to bake the total amount of cakes, then inequality is x*8 > 32. Because she has orders for more than 32 cakes and can make 8 cakes per day. Dividing by 8 every side of the inequality gives: x > 4. Graph of the solution is attached (notice that 4 is not included).

5 0
3 years ago
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