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Feliz [49]
2 years ago
7

25 points!!!! HELP ANSWER!

Mathematics
2 answers:
Fantom [35]2 years ago
8 0

Answer:

a) 1st and 2nd

b) 4th one

Step-by-step explanation:

scZoUnD [109]2 years ago
5 0

Answer:

a 1 and 4

b 2 and 1

Step-by-step explanation:

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Lawrence performs a survey to determine the average number of minutes of exercise seventh-grade athletes get in one week. He get
RoseWind [281]

Answer:

1) Is more representative

Step-by-step explanation:

The problem with his selection is that maybe there are few students participating in certain sport and those students maybe do quite more excercise than the rest (or quite less). This will modify the results because the sample he selected is biased. This problem wont be solved by method 3 or 4, because he is still selecting students that may modify heavily the results with a high probability

This problem will also appear if he choose a sample by class. Maybe, in a class there are quite few students, and selecting from class will make those students appear quite more often than, lets say, a 7th grade student selected at random, therefore the selection is biased in this case as well.

If he has a list with all seventh grade students, each student is equallly likely to be selected and as a consequence, the the results wont be biased. Approach 1 is the best one.

5 0
3 years ago
Read 2 more answers
Melissa pulls the pep club to see which sport they like. She finds that 45 students like soccer only, 35 students like football
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The one that looks like this.

6 0
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