Astatistics student is doing a project for her class. she wants to make a prediction for the outcome of an upcoming national election. since there are only two candidates, she decides that her question is "which candidate do more people favor in the upcoming election? " she decides to randomly interview 100 students crossing the courtyard on campus about their preference. is this sample good for drawing general conclusions about the results of the election?

Yes, Sample is good.

Step-by-step explanation:

The sample is a subset of the population, we take a sample because sometimes it is not possible to work on the whole population or it is quite costly or the time has taken so we work on sample.

Characteristics of Good Sample:

     2. It should be representative of the sample.

     3. The choice of the sample should be flexible.

Since here she did not do any bias in selecting a sample. Here the choice of sample is independent and each unit has an equal chance of being selected in a sample. So, the choice of sample is quite good.

false

step-by-step explanation:

4y - 6 + 4y^2 - 9

before simplifying this contains 4 terms

after simplifying

4y -15 + 4y^2

it contains 3 terms

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47