Question

The city of Valley Grove is considering shortening the length of the school day. The school board hired Mr. Kent to do a survey to help them decide what to do.
a. Mr. Kent interviewed 54 students as they left the school. Is this a random sample? Explain.
b. Mr. Kent used this survey question: “Should the lengthy school day, which now extends for 7.5 hours, be shortened to 6 hours?” Is this question biased or fair? Explain.
c. Of the 54 responses he received, 51 were “yes.” The rest were “no.” What percent of the responses were “no”?

Answer 1

@ganeshie8

Answer 2

a) Not necessarily. If he interview the first 54 to leave, he is getting the students who don't participate in after-class activities. Converse for last 54 students. If he selected 54 at random times over a period of several hours, the selection may be random.

b) No. Leading question.

c)
54 - 51 = 3
3/54 = 0.0555...
0.0555...(100) = 5.6% to 2 significant figures

^ My answer
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Answer 3

@ganeshie8

Answer 4

@matricked

Answer 5

is my answer right?

Answer 6

i tgink it involves testing of hypothesis ..

Answer 7

@urkhada was my answer right?

Answer 8

I am on mobile, i don' know.. If I am on computer I can tell u by doing it

Answer 9

so... my answer is wrong?

Answer 10

here I updated me answer

a. no, becuase Mr. Kent just interviewed students, not others in the Valley Grove.

b. biased, becuase he calles it a lengthy school day and lengthy implies that it should be shortened.

c. 54-51=3 students who said no

3 (students who said no)/ 54 (total students)

0.055555555555555555555555+

*100 (to turn the decimal into a percent)

about 05.5 %

Answer 11

@sourwing is my answer correct?

a. no, becuase Mr. Kent just interviewed students, not others in the Valley Grove.

b. biased, becuase he calles it a lengthy school day and lengthy implies that it should be shortened.

c. 54-51=3 students who said no

3 (students who said no)/ 54 (total students)

0.055555555555555555555555+

*100 (to turn the decimal into a percent)

about 05.5 %