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Bmal 590 Week 5 Exam Questions Correct Solutions New Update £10.47
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Bmal 590 Week 5 Exam Questions Correct Solutions New Update
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  • BMAL 590

Bmal 590 Week 5 Exam Questions Correct Solutions New Update inferential statistics - 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 a...

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  • December 27, 2024
  • 10
  • 2024/2025
  • Exam (elaborations)
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  • bmal 590 week 5 exam questions correct solutions n

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  • BMAL 590

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Bmal 590 Week 5 Exam Questions
Correct Solutions New Update

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


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


doing inferential statistics. - ✔✔The Process of using sample statistics to draw conclusions about

population parameters is called


All registered voters in the state of Michigan - ✔✔Which of the following represents a population, as

opposed to a sample?




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the 500 adult pine trees selected at random selected at random from this forest. - ✔✔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 - ✔✔The

significance level of statistical inference measures


the proportion of times an estimation procedure will be correct in the long run - ✔✔The confidence level

of a statistical inference measures


A survey - ✔✔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 - ✔✔Which of the following statements is true regarding the design of a good

survey ?


Direct observation - ✔✔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 - ✔✔The difference between a sample mean and the population mean is called


Stratified random sample - ✔✔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


Simple random sample - ✔✔When every possible sample with the same number of observations is

equally likely to be chosen, the result is called a


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


all of these answers are correct - ✔✔Which of the following is an example of a non sampling error



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