Astudent conducted a poll of 100 internet users and found the average time spent online per day was 2 hours. the student described 2 hours as a parameter. the student is incorrect because the value is a numerical measurement describing a characteristic of a ratio a sample a population quantitative data

In statistics A sample is a part of a population .A sample statistic is any quantity we derive  from a sample taken from a population . A sample refers to a set of observations drawn from a population.

We are given A student conducted a poll of 100 internet users and found the average time spent online per day was 2 hours .Here 2 hours is an observation derived from the set of observations made .So 2 hours is a characterstic of a sample.

The second option a Sample is the right answer.

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.

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