An online store contacts 1000 customers from its list of customers who have purchased in the last year. In all, 696 of the 1000 say that they are very satisfied with the store's website. The population in this setting is:
A) All customers who have purchas
A) All customers who have purchased something in the last year.
A state representative wants to know how voters in his district feel about enacting a statewide smoking ban in all enclosed public places, including bars and restaurants, as well as several other current statewide issues. He mails a questionnaire addressi
B) The 152 voters returning the questionnaire
Which of the following does not represent data?
A) Types of books in a school library
B) Best players in a football tournament
C) Lecture notes collected during your bachelor degree study
D) The height of people in school
E) None of these
E) None of these
Which of the following is a census?
A) The survey given to some of the workers in a construction company
B) The list of heights of all new born babies in a hospital from the date the hospital became operational
C) The different types of cars that visited
B) The list of heights of all new born babies in a hospital from the date the hospital became operational
What method of sampling will lead to a representative sample?
A) Predetermined sampling technique
B) Random selection technique
C) None of these
B) Random selection technique
Which of the following samples are representative samples of the population described below?
Circle one, and explain your answer by showing your calculations below:
Consider a population containing: 4000 males, 8000 females. Three samples are randomly sel
A) Sample A: 40 males, 80 females
Consider a population containing: 25 blue balls, 35 red balls. A biased sample of 7 blue balls and 5 red balls is selected. Determine which group in the population that the sample is biased against.
A) The blue balls
B) The red balls
C) Both
D) None of th
B) The red balls
Determine whether the following sample is biased or representative.
You see a student standing in front of the student center, now and then stopping other students to ask those questions. She stops both male and female students and collect their opinions.
B) Biased
Determine whether the following sample is convenience or a voluntary response sample.
You see a student standing in front of the student center, now and then stopping other students to ask them questions. She stops both male and female students and collec
B) Convenience sample
Determine whether the following sample is convenience or a voluntary response sample.
At the end of service by a credit card company, agents ask their customers to participate in a survey. Those who were not too busy at the moment after the service were m
B) Voluntary response sample
You are using the table of random digits to choose a simple random sample of six students from a class of 30 students. You label the students 01 to 30 in alphabetical order, and then select a simple random sample. Which of the following is a possible samp
C) 04, 18, 07, 13, 02, 05
_____________________________ is a sample of size n where every group of size n has an equal chance of being selected as the sample.
A) Stratified sample
B) Simple random sample
C) Cluster sample
D) Multistage sample
E) Systematic sample
B) Simple random sample
_________________ is a sample where information is obtained from every kth subject in the population.
A) Stratified sample
B) Simple random sample
C) Cluster sample
D) Multistage sample
E) Systematic sample
E) Systematic sample
________________________________is a sample where different types of sampling methods are used to collect the data from the population.
A) Stratified sample
B) Simple random sample
C) Cluster sample
D) Multistage sample
E) Systematic sample
D) Multistage sample
_____________________________ is a sample where the population is first structured into different groups and information is collected randomly from all the different groups.
A) Stratified sample
B) Simple random sample
C) Cluster sample
D) Multistage samp
A) Stratified sample
________________________________ is a sample where the population is first structured into different groups and one group is randomly selected and information is collected from all the members of that group.
A) Stratified sample
B) Simple random sample
C)
C) Cluster sample
An energy drink company recruits 300 scientists from five different scientific fields to carry out a study about the effects of its products on the population of Statesboro, GA. The scientists recruited 50 volunteers in their study and administered survey
F) None of these
A sample of households in a community is selected at random from the telephone directory. In this community, 4% of households have no telephone, 10% have only cell phones, and another 25% have unlisted telephone numbers. The sample will certainly suffer f
B) Undercoverage
Archaeologists plan to examine a sample of two-meter-square plots near an ancient Greek city for artifacts visible in the ground. They choose separate samples of plots from floodplain, coast, foothills, and high hills. What kind of sample is this?
A) A si
B) A stratified random sample
You must choose an SRS of 10 of the 440 retail outlets in New York that sell your company's products. How would you label this population to select a simple random sample?
A) 001, 002, 003,..., 439, 440
B) 000, 001, 002,..., 439, 440
C) 1, 2,..., 439, 440
A) 001, 002, 003,..., 439, 440