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Elodia [21]
2 years ago
9

I need help form my text that is do today. But I can’t figure this one out

Mathematics
1 answer:
melamori03 [73]2 years ago
5 0

Answer:

Its D thats the answer

Step-by-step explanation:

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PLSS HELP!
Blababa [14]

Answer:

Part A: yes

Part B: 0.0094

Step-by-step explanation:

I took the quiz too

8 0
2 years ago
Identify the sampling techniques​ used, and discuss potential sources of bias​ (if any). Explain. In​ 1965, researchers used ran
crimeas [40]

Answer:

For this case, the method used would be simple random sampling since random digit dialing assumes that all possible people in the population have the same probability of being chosen.

We may have a non-response bias, because if a selected person does not choose the phone, we have no answers to the questions and there is no data available.

We may also have under coverage bias because some people may not have a phone and in this case these people would be excluded from the study

Step-by-step explanation:

For this case is important to remember the different types of sampling methods

Simple random sampling is a method where we select a sample size n and each individual in the population are equally likely to be selected.

Stratified random sampling is a method on which we select samples from subgroups of the population usually called strata.

Convinience sampling is a method that use a random number so select the sample

Cluster sampling is a method that separates the population in natural subgroups with no intersection between them and some of the groups are selected for the sample.

For this case, the method used would be simple random sampling since random digit dialing assumes that all possible people in the population have the same probability of being chosen.

Sources of bias

We may have a non-response bias, because if a selected person does not choose the phone, we have no answers to the questions and there is no data available.

We may also have under coverage bias because some people may not have a phone and in this case these people would be excluded from the study

8 0
3 years ago
Answer this question if u are 100% sure
Julli [10]
The other side is x^2+9   
x^3-27/x-3= x^2+9
3 0
3 years ago
28 - 2 (5a - 3) = 47
Alex787 [66]

Answer: a=-1.3

Step-by-step explanation:

1) Reorder the terms: 28 + (-3 * -2 + 5a * -2) = 47

28 + (6 + -10a) = 47

2) Solving: 34 + -10a = 47

3) Add -34 to each side of the equation: 34 + -34 + -10a = 47 + -34

4) Combine like terms: 34 + -34 = 0: 0 + -10a = 47 + -34

-10a = 47 + -34

5) Combine like terms: 47 + -34 = 13: -10a = 13

6) Divide each side by -10: a = -1.3

5 0
3 years ago
Which question is statistical? A) How many cookies are in a dozen? B) How many teachers gave an exam on Friday? C) What is your
sergey [27]
The answer is d, because you can make it into percent and make it into graphs
8 0
2 years ago
Read 2 more answers
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