Decide if the following sampling methods produce a simple random sample of studentsfrom 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 inthat digit.(c) If the classroom has six rows of chairs with five seats in each row, choose a rowat 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 1to 15, and the girls the numbers from 16 to 30. Then use a random digit tableto select six numbers from 1 to 30. Select the students assigned those numbers inyour sample.(e) If the class consists of 15 boys and 15 girls, assign the boys the numbers from 1to 15, and the girls the numbers from 16 to 30. Then use a random digit table toselect three numbers from 1 to 15 and three numbers from 16 to 30. Select thestudents assigned those numbers in your sample.(f) Randomly choose a letter from the English alphabet and select for the samplethose students whose last names begin with that letter. If no last name beginswith that letter, randomly choose another letter from the alphabet.

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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

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

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Concept explainers

Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.

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Question

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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