Decide if the following sampling methods produce a simple random sample of students from a class of 30 students. If not, explain why. (a) Select the first six students on the class roll sheet. (b) Pick a digit at random and select those students whose phone numbers end in that digit. (c) If the classroom has six rows of chairs with five seats in each row, choose a row

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Decide if the following sampling methods produce a simple random sample of students
from a class of 30 students. If not, explain why.
(a) Select the first six students on the class roll sheet.
(b) Pick a digit at random and select those students whose phone numbers end in
that digit.
(c) If the classroom has six rows of chairs with five seats in each row, choose a row
at random and select all students in that row.
(d) If the class consists of 15 boys and 15 girls, assign the boys the numbers from 1
to 15, and the girls the numbers from 16 to 30. Then use a random digit table
to select six numbers from 1 to 30. Select the students assigned those numbers in
your sample.
(e) If the class consists of 15 boys and 15 girls, assign the boys the numbers from 1
to 15, and the girls the numbers from 16 to 30. Then use a random digit table to
select three numbers from 1 to 15 and three numbers from 16 to 30. Select the
students assigned those numbers in your sample.
(f) Randomly choose a letter from the English alphabet and select for the sample
those students whose last names begin with that letter. If no last name begins
with that letter, randomly choose another letter from the alphabet.
Transcribed Image Text:Decide if the following sampling methods produce a simple random sample of students from a class of 30 students. If not, explain why. (a) Select the first six students on the class roll sheet. (b) Pick a digit at random and select those students whose phone numbers end in that digit. (c) If the classroom has six rows of chairs with five seats in each row, choose a row at random and select all students in that row. (d) If the class consists of 15 boys and 15 girls, assign the boys the numbers from 1 to 15, and the girls the numbers from 16 to 30. Then use a random digit table to select six numbers from 1 to 30. Select the students assigned those numbers in your sample. (e) If the class consists of 15 boys and 15 girls, assign the boys the numbers from 1 to 15, and the girls the numbers from 16 to 30. Then use a random digit table to select three numbers from 1 to 15 and three numbers from 16 to 30. Select the students assigned those numbers in your sample. (f) Randomly choose a letter from the English alphabet and select for the sample those students whose last names begin with that letter. If no last name begins with that letter, randomly choose another letter from the alphabet.
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