BMAL 590 MM EXAM QUESTIONS AND
ANSWERS. VERIFIED 2025/2026.
Inferential statistics - ANS You take a random sample of 100 students at your university and
find that their average GPA is 3.. If you use this information to help you estimate the average
GPA for all students at your University then you are doing what branch of Statistics?
Sample - ANS A company has developed a new computer sound card whose average lifetime
is unknown, 200 sound cards are randomly selected from a large production line and tested;
their average lifetime is found to be 5 years. The 200 sounds cards represent a
Statistic - ANS A company has developed a new computer sound card whose average lifetime
is unknown. In order to estimate the average, 200 sound cards are randomly selected from a
large production line and tested ; their average lifetime is found to be 5 years. The 5 years
represents a
Parameter - ANS A summary measure that is computed from a population is called a
A significance level - ANS Which of the following is a measure of the reliability of a statistical
inference?
doing inferential statistics. - ANS The Process of using sample statistics to draw conclusions
about population parameters is called
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, All registered voters in the state of Michigan - ANS Which of the following represents a
population, as opposed to a sample?
the 500 adult pine trees selected at random selected at random from this forest. - ANS A
study in underway to determine the average height of all 32000 adult pines trees in a certain
national forest. The heights of 500 randomly selected adult pine tree are measured and
analyzed. The sample this study is
the proportion of times a conclusion about a population will be wrong in the long run -
ANS The significance level of statistical inference measures
the proportion of times an estimation procedure will be correct in the long run - ANS The
confidence level of a statistical inference measures
A survey - ANS 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 ?
All of these choices are true - ANS Which of the following statements is true regarding the
design of a good survey ?
Direct observation - ANS 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 ?
Sampling error - ANS The difference between a sample mean and the population mean is
called
Stratified random sample - ANS The manager of the customer service division of a major
consumer electronics company is interested in determine 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
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
ANSWERS. VERIFIED 2025/2026.
Inferential statistics - ANS You take a random sample of 100 students at your university and
find that their average GPA is 3.. If you use this information to help you estimate the average
GPA for all students at your University then you are doing what branch of Statistics?
Sample - ANS A company has developed a new computer sound card whose average lifetime
is unknown, 200 sound cards are randomly selected from a large production line and tested;
their average lifetime is found to be 5 years. The 200 sounds cards represent a
Statistic - ANS A company has developed a new computer sound card whose average lifetime
is unknown. In order to estimate the average, 200 sound cards are randomly selected from a
large production line and tested ; their average lifetime is found to be 5 years. The 5 years
represents a
Parameter - ANS A summary measure that is computed from a population is called a
A significance level - ANS Which of the following is a measure of the reliability of a statistical
inference?
doing inferential statistics. - ANS The Process of using sample statistics to draw conclusions
about population parameters is called
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, All registered voters in the state of Michigan - ANS Which of the following represents a
population, as opposed to a sample?
the 500 adult pine trees selected at random selected at random from this forest. - ANS A
study in underway to determine the average height of all 32000 adult pines trees in a certain
national forest. The heights of 500 randomly selected adult pine tree are measured and
analyzed. The sample this study is
the proportion of times a conclusion about a population will be wrong in the long run -
ANS The significance level of statistical inference measures
the proportion of times an estimation procedure will be correct in the long run - ANS The
confidence level of a statistical inference measures
A survey - ANS 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 ?
All of these choices are true - ANS Which of the following statements is true regarding the
design of a good survey ?
Direct observation - ANS 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 ?
Sampling error - ANS The difference between a sample mean and the population mean is
called
Stratified random sample - ANS The manager of the customer service division of a major
consumer electronics company is interested in determine 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
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
