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Slav-nsk [51]
3 years ago
13

Suppose you are conducting a survey regarding activity level of children in the LA school district. you obtain a cluster sample

of 16schols within the la school district and sample all sophomore students in the randomly selected schools. The survey is administered by the parents. THE SURVEY HAD BAIS (sample, response or nonresponse)
Mathematics
1 answer:
loris [4]3 years ago
7 0
<span>The survey had a sample and response bias. The survey only randomly selected sophomore students, when it needed to be a thorough survey of children in the LA school district, so the sample size is neither large enough or relevant. Secondly, because the survey was administered by the parents of the students, the students surveyed will be more likely to over-report their activity level.</span>
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Help I don’t understand this
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Step-by-step explanation:

look at the already present values in the table.

there is 473 under "number" in the first line.

398 under "100 more" in the second line.

and 890 under "10 less" in the third line.

the column "number" is always the foundation for all the other columns left and right.

e.g. "100 less" means 100 less than that number in the middle of the same line.

we need to figure out the missing numbers in each line, so that every line is consistent with its "number" in the middle.

first line :

we have "number" already (473). so,

"100 more" = 473 + 100 = 573

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"1 less" = 473 - 1 = 472

"10 less" = 473 - 10 = 463

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second line :

we have "100 more" (398). that means this is 100 more than "number". so,

"100 more" = 398

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"number" = 398 - 100 = 298

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"1 less" = 900 - 1 = 899

"10 less" = 890

"100 less" = 900 - 100 = 800

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