Match these terms with their descriptions. 1. a portion of a large group random sample 2. choosing a sample so that every member has an equal chance of being chosen estimating from a sample 3. choosing a sample from people who are under 15 years old sample 4. using the responses of a small group to make conclusions about the large group. biased sample random sample estimating from a sample sample biased sample

The correct matches are-

1. a portion of a large group - Sample

Sample is a part of population, considered for surveys.

2. choosing a sample so that every member has an equal chance of being chosen - Random sample

Random sample is non biased way of sampling where each member has equal chances of participating in the survey.

3. choosing a sample from people who are under 15 years old - Biased sample

Biased samples produce biased results. These are based on specific criteria and are not random.

4. using the responses of a small group to make conclusions about the large group - Estimating from a sample

Estimations are rough conclusions made from collecting responses.

the science club has 42 people and the robotics club has 33

step-by-step explanation:

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you