There is evidence of non-response bias in the survey results because only a fraction of the people that were mailed responded.
<h3>What is a survey?</h3>
A survey is a type of research which seeks to obtain information from a specific group of people called respondents. The research is normally in form of a questionnaire the reflects the honest opinion of the respondent.
From the result of the survey, it is possible to conclude that there is evidence of non-response bias in the survey results because only a fraction of the people that were mailed responded.
Learn more about survey: brainly.com/question/13532910
Answer:
the answers for those are number 4 is 150 and 5 is 16%
Step-by-step explanation:
number 4 500 x 30= 15,000
15,000 ÷ 100= 150
number 5 80 x 100=8,000
8,000÷ 500= 16 so 16%
Answer:
First number = 4
Second number = 9
Step-by-step explanation:
If the first number = x, the second number = x + 5.
The calculation can be expressed as follows:
x + 2(x + 5) = 22
First, expand the bracket 2(x + 5):
x + 2x + 10 = 22
Combine like terms:
3x + 10 = 22
Subtract 10 from both sides:
3x = 12
Divide both sides by 3:
x = 4
First number = 4
Second number = 4 + 5 = 9
