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BMAL 590 Quantitative Research Techniques and Statistics Questions and Answers 100% Pass

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  • Module
  • BMAL 590
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  • BMAL 590

BMAL 590 Quantitative Research Techniques and Statistics Questions and Answers 100% Pass 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 ...

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  • January 8, 2025
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  • Exam (elaborations)
  • Questions & answers
  • BMAL 590
  • BMAL 590
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BMAL 590 Quantitative Research
Techniques and Statistics Questions
and Answers 100% Pass

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 - ✔✔Statistics


A summary measure that is computed from a population is called a - ✔✔Parameter


Which of the following is a measure of the reliability of a statistical inference? - ✔✔A significance level


The process of using sample statistics to draw conclusions about population parameters is called -

✔✔Doing inferential statistics


Which of the following represents a population, as opposed to a sample? - ✔✔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 - ✔✔The 500 adult pine trees selected at random selected at random from this forest


The significance level of a statistical inference measures - ✔✔The proportion of times a conclusion about a

population will be wrong in the long run


The confidence level of a statistical inference measures - ✔✔The proportion of times an estimation

procedure will be correct in the long run


Author. Emily Charlene, ©2025 All Rights Reserved.

, 2|Page


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? - ✔✔A survey


Which of the following statements is true regarding the design of a good survey? - ✔✔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? - ✔✔Direct observation


The difference between a sample mean and the population mean is called - ✔✔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 - ✔✔Stratified random sample


When every possible sample with the same number of observations is equally likely to be chosen, the

result is called a - ✔✔Simple random sample


Which of the following types of samples is almost always biased? - ✔✔Self-selected samples


Which of the following is an example of a nonsampling error? - ✔✔All of these choices are true


Which of the following situations lends itself to cluster samples? - ✔✔All of these choices are true


Which of the following causes sampling error? - ✔✔Taking a random sample from a population instead

of studying the entire population


Which of the following describes selection bias? - ✔✔Some members of the target population are

excluded from possible selection for the sample


An approach of assigning probabilities which assumes that all outcomes of the experiment are equally

likely is referred to as the - ✔✔Classical approach


Author. Emily Charlene, ©2025 All Rights Reserved.

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