BMAL 590 Quantitative Research Techniques and Statistics
Exam Questions and Answers Graded A+
A company has developed a new computer sound card whose average lifetime is
unknown. In order to estimate this average, 200 sound cards are randomly selected
from a large production line and tested; their average lifetime is found to be 5
years. The five years represents a - Answer-Statistics
A summary measure that is computed from a population is called a - Answer-
Parameter
Which of the following is a measure of the reliability of a statistical inference? -
Answer-A significance level
The process of using sample statistics to draw conclusions about population
parameters is called - Answer-Doing inferential statistics
Which of the following represents a population, as opposed to a sample? - Answer-
All registered voters in the State of Michigan
A study in under way to determine the average height of all 32,000 adult pine trees
in a certain national forest. The heights of 500 randomly selected adult pine trees
are measured and analyzed. The sample in this study is - Answer-The 500 adult
pine trees selected at random selected at random from this forest
, The significance level of a statistical inference measures - Answer-The proportion
of times a conclusion about a population will be wrong in the long run
The confidence level of a statistical inference measures - Answer-The proportion
of times an estimation procedure will be correct in the long run
A marketing research firm selects a random sample of adults and asks them a list of
questions regarding their beverage preferences. What type of data collection is
involved here? - Answer-A survey
Which of the following statements is true regarding the design of a good survey? -
Answer-All of these choices are true
Which method of data collection is involved when a researcher counts and records
the number of students wearing backpacks on campus on a given day? - Answer-
Direct observation
The difference between a sample mean and the population mean is called -
Answer-Sampling error
The manager of the customer service division of a major consumer electronics
company is interested in determining whether the customers who have purchased a
videocassette recorder over the past 12 months are satisfied with their products. If
there are four different brands of videocassette recorders made by the company, the
best sampling strategy would be to use a - Answer-Stratified random sample
Exam Questions and Answers Graded A+
A company has developed a new computer sound card whose average lifetime is
unknown. In order to estimate this average, 200 sound cards are randomly selected
from a large production line and tested; their average lifetime is found to be 5
years. The five years represents a - Answer-Statistics
A summary measure that is computed from a population is called a - Answer-
Parameter
Which of the following is a measure of the reliability of a statistical inference? -
Answer-A significance level
The process of using sample statistics to draw conclusions about population
parameters is called - Answer-Doing inferential statistics
Which of the following represents a population, as opposed to a sample? - Answer-
All registered voters in the State of Michigan
A study in under way to determine the average height of all 32,000 adult pine trees
in a certain national forest. The heights of 500 randomly selected adult pine trees
are measured and analyzed. The sample in this study is - Answer-The 500 adult
pine trees selected at random selected at random from this forest
, The significance level of a statistical inference measures - Answer-The proportion
of times a conclusion about a population will be wrong in the long run
The confidence level of a statistical inference measures - Answer-The proportion
of times an estimation procedure will be correct in the long run
A marketing research firm selects a random sample of adults and asks them a list of
questions regarding their beverage preferences. What type of data collection is
involved here? - Answer-A survey
Which of the following statements is true regarding the design of a good survey? -
Answer-All of these choices are true
Which method of data collection is involved when a researcher counts and records
the number of students wearing backpacks on campus on a given day? - Answer-
Direct observation
The difference between a sample mean and the population mean is called -
Answer-Sampling error
The manager of the customer service division of a major consumer electronics
company is interested in determining whether the customers who have purchased a
videocassette recorder over the past 12 months are satisfied with their products. If
there are four different brands of videocassette recorders made by the company, the
best sampling strategy would be to use a - Answer-Stratified random sample
