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Helen [10]
4 years ago
10

A teacher needs to find out how many seventh graders will be going on a field trip. Which best describes the population that the

teacher should survey?
Mathematics
2 answers:
Novay_Z [31]4 years ago
5 0
He should survey the seventh grade population because they are the only ones with a chance of going on the trip
Bumek [7]4 years ago
4 0

Answer: All seventh graders.

Step-by-step explanation:

In statistics , the population is the set of all possible observations as per the researcher's objective .

<em>For example</em> if a researcher wants to find the average height of teenager of age group between 13 year and 15 years in Seattle, he will need the data of the population of height of teenager of age group between 13 year and 15 years in Seattle.

Here , A teacher needs to find out how many seventh graders will be going on a field trip.

Clearly as per her objective she need the data of all seventh graders .

So , the best describes the population that the teacher should survey would be : All seventh graders.

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If a marble is randomly selected from the box, then the probability

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Step-by-step explanation:

A box contains 19 large marbles and 18 small marbles

Each marble is either green or white

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If a marble is randomly selected from the box, we need to find the

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1. Find P(small) ⇒ P(s)

2.Find P(green) ⇒ P(g)

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∴ The total number of marbles = 19 + 18 = 37

∴ P(s) = \frac{18}{37}

∵ There are 8 small white marbles

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∴ The number of small green marbles = 18 - 8 = 10

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∴ P(small or green) = \frac{18}{37}+\frac{19}{37}-\frac{10}{37}

∴ P(small or green) = \frac{27}{37} = 0.7297

If a marble is randomly selected from the box, then the probability

that it is small or green is 0.7297

Learn more:

you can learn more about probability in brainly.com/question/13053309

#Learnwithbrainly

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