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jek_recluse [69]
3 years ago
11

Timothy wants to estimate the mean number of siblings for each student in his school. He records the number of siblings for each

of 75 randomly selected students in the school. What is the statistic?
(A) the specific number of siblings for each randomly selected student
(B) the 75 randomly selected students
(C) the mean number of siblings for the randomly selected students
(D) the mean number of siblings for all students in the school
(E) all the students in the school
Mathematics
1 answer:
Ede4ka [16]3 years ago
4 0

Answer:

(A) the specific number of siblings for each randomly selected student

Step-by-step explanation:

First Timothy wants to estimate the mean number of siblings for each student in his school

So he selected a random sample of 75 students, then recorded the number of siblings they have

He later find the mean.

You can see the mean was obtained from the selected group not all students in the school hence option D and E are not correct.

Option A clearly indicates a mean was obtained for the siblings that were from the randomly selected students.

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Answer:

E, needs more info to be determined

Step-by-step explanation:

We know that Kai takes 30 minutes round-trip to get to his school.

One way is uphill and the other is downhill.

He travels twice as fast downhill than uphill.

This means that uphill accounts for 20 minutes of the round-trip and downhill accounts for 10 minutes of his trip.

However, even with this information, we do not know how far his school is.

In order to figure out how far away his school is, we would need more information about the speed at which Kai is traveling.

Simply knowing that he travels twice as fast downhill is not enough.

This question could only be solved by knowing how many miles Kai travels uphill or downhill in a given time.

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Answer:

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