In a survey of more than 6000 people, 95% of the respondents claimed to prefer penelope's puffy popcorn over any other brand of popcorn. the respondents being which of the following groups of people would most likely call into question the results of the survey? a. people who were promised free samples of penelope's puffy popcorn for completing the survey b. people whose names were randomly chosen from a telephone book c. people who were randomly stopped and asked their opinions while walking down the street d. people who blindly tested 10 brands of popcorn and were asked to choose their favorite

A. People who were promised free samples of Penelope's Puffy Popcorn for completing the survey.

Step-by-step explanation:

We are given that,

Out of 6000 people, 95% preferred Puffy Popcorn over any other brand.

It is required to find the group of people who were most likely surveyed.

Now, as we see that,

Number of people who prefer Puffy Popcorn = 95% of 6000 = 5700

Number of people who do not prefer Puffy Popcorn = 6000 - 5700 = 300

So, we get that,

Majority of the people out of the group prefers the Puffy Popcorn.

That is, the result is most likely to be a biased result.

According to the options, the group most likely to be surveyed is,

A. People who were promised free samples of Penelope's Puffy Popcorn for completing the survey.

46.2+112.3

step-by-step explanation:

{x = -1/2 ,   y = -1

step-by-step explanation:

solve the following system:

{2 x + y = -2

{10 x - 3 y = -2

in the first equation, look to solve for y:

{2 x + y = -2

{10 x - 3 y = -2

subtract 2 x from both sides:

{y = -2 x - 2

{10 x - 3 y = -2

substitute y = -2 x - 2 into the second equation:

{y = -2 x - 2

{10 x - 3 (-2 x - 2) = -2

10 x - 3 (-2 x - 2) = (6 x + 6) + 10 x = 16 x + 6:

{y = -2 x - 2

{16 x + 6 = -2

in the second equation, look to solve for x:

{y = -2 x - 2

{16 x + 6 = -2

subtract 6 from both sides:

{y = -2 x - 2

{16 x = -8

divide both sides by 16:

{y = -2 x - 2

{x = -1/2

substitute x = -1/2 into the first equation:

{y = -1

{x = -1/2

collect results in alphabetical order:

answer:   {x = -1/2 ,   y = -1