Question

In: Math

Describe how the researcher should apply the five basic steps in a statistical study. ( Assume...

Describe how the researcher should apply the five basic steps in a statistical study. ( Assume that all the people in the poll answered truthfully).

The percentage of workers that drink coffee or tea

a. The population is all workers. The researcher wants to estimate the percentage in this population that do not drink coffee or tea.

B. The population is all workers. The researcher wants to estimate the percentage in this population that drink coffee or tea.

C. The population is all workers that do not drink coffee or tea. The researcher wants to estimate the number in this population that drink coffee or tea.

D. The population is all workers that drink coffee or tea. The researcher wants to estimate the number in this population that drink coffee or tea.

Determine how to apply the second basic step in a statistical study in this situation.

A. The researchers should only gather raw data from workers that drink coffee or tea.

B. the researcher should gather data about drinking coffee or tea from the largest sample of workers from which the researcher can gather data.

C. the researcher should only gather raw data from workers that do not drink coffee or tea

D. the researcher should gather raw data from all the workers about whether or not they drink coffee or tea.

Determine how to apply the third step in the statistical study in this situation:

A. the sample statistic of interest is the number of workers in the sample that do not drink coffee or tea.

B. The sample statistic of interest in the percentage of workers in the sample that do not drink coffee or tea

C. the sample statistic of interest is the percentage of workers in the sample that drink coffee or tea

D. the sample statistic of interest is the number of workers in the sample that drink coffee or tea

Determine how to apply the fourth basic step in the statistical study in this situation.

A. If the researcher followed correct procedures, he or she can be confident that the sample statistics is equal to the percentage of workers in the population that drink coffee or tea

B. the researcher should use the sample statistic as an estimate for the population value of the percentage of workers that drink coffee or tea and then use the methods of statistics to determine how good that estimate is.

C. If the percentage of workers that drink coffee or tea is greater than 50% in the sample, the researcher can be confident that all workers drink coffee or tea

D. The sample statistics provides no useful information to the researcher in this situation

Determine how to apply the fifth basic step in the statistical study in this situation.

A. the researcher should use the methods of the statistics to determine the quality of the estimate of the population parameter and draw conclusions based on this estimate accordingly.

B. the researcher knows that the sample static is equal to the population parameter, so he or she may draw conclusion with complete confidence.

C. there is no way to determine how well the sample statistic estimates the population parameter,

D. the researcher cannot draw any conclusion based on the value of the sample statistic.

Solutions

Expert Solution

Q1: The percentage of workers that drink coffee or tea

Answer B. The population is all workers. The researcher wants to estimate the percentage in this population that drink coffee or tea.

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Q2: Determine how to apply the second basic step in a statistical study in this situation.

Answer: D. the researcher should gather raw data from all the workers about whether or not they drink coffee or tea.

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Q3: Determine how to apply the third step in the statistical study in this situation:

Answer: C. the sample statistic of interest is the percentage of workers in the sample that drink coffee or tea

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Q4: Determine how to apply the fourth basic step in the statistical study in this situation.

Answer: B. the researcher should use the sample statistic as an estimate for the population value of the percentage of workers that drink coffee or tea and then use the methods of statistics to determine how good that estimate is.

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Determine how to apply the fifth basic step in the statistical study in this situation.

Answer: A. the researcher should use the methods of the statistics to determine the quality of the estimate of the population parameter and draw conclusions based on this estimate accordingly.


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