BUAL 2650 Exam 1 Park Questions and
Answers 2025
Population |- |CORRECT |ANSWERS-
Set |of |all |elements |about |which |you |wish |to |draw |conclusions
Sample |- |CORRECT |ANSWERS-SubsetAof |the |elements |of |a |population
|Population |parameter |- |CORRECT |ANSWERS-
Number |calculated |from |all |the |population |measurements |that |describes |some |aspect |of
|the |population
Sample |statistic |- |CORRECT |ANSWERS-
Number |calculated |using |the |sample |measurements |thatAdescribes |some |aspect |of |the
|sample
Sampling |distribution |of |the |sample |mean |(x) |- |CORRECT |ANSWERS-
Possibility |distribution |of |the |sample |means |obtainable |from |all |possible |samples |of |size |n
|from |a |population |of |size |N
Normal |curve |- |CORRECT |ANSWERS-
Many |situations, |distribution |of |all |possible |sample |means |looks |roughly |like |this
|The |mean |of |all |possible |sample |means |is |equal |to |- |CORRECT |ANSWERS-
|Formula |on |slides
The |standard |deviation |of |all |possible |sample |means |is |less |than |-
|CORRECT |ANSWERS-Formula |on |slides
Sampling |error |- |CORRECT |ANSWERS-
Difference |between |the |sample |statistic |and |population |parameter
Also |called |variation
Interval |Estimator |(confidence |interval) |- |CORRECT |ANSWERS-
Formula |that |tells |us |how |to |use |the |sample |data |to |calculate |an |interval |that |estimates |t |he
|target |parameter
(Sample |mean) |+ |or |- |(Margin |of |error)
Variance |in |the |population |- |CORRECT |ANSWERS-Lower |variance |in |the |population |-
> smaller |(narrower) |confidence |interval
Sample |Size |- |CORRECT |ANSWERS-Larger |sample |size |-
> Smaller |(narrower) |confidence |interval
|Confidence |Level |- |CORRECT |ANSWERS-
Percentage |(ex: |0.95) |of |how |confident |we |are |that |the |CI |contains |the |population |mean
Larger |confidence |level |-> |wider |confidence |level
Steps |in |hypothesis |testing |- |CORRECT |ANSWERS-1.State |the |hypothesis
2. Specify |a |value |for |significance |level
3. Analyze |the |data
4. Make |conclusions |and |decisions
Answers 2025
Population |- |CORRECT |ANSWERS-
Set |of |all |elements |about |which |you |wish |to |draw |conclusions
Sample |- |CORRECT |ANSWERS-SubsetAof |the |elements |of |a |population
|Population |parameter |- |CORRECT |ANSWERS-
Number |calculated |from |all |the |population |measurements |that |describes |some |aspect |of
|the |population
Sample |statistic |- |CORRECT |ANSWERS-
Number |calculated |using |the |sample |measurements |thatAdescribes |some |aspect |of |the
|sample
Sampling |distribution |of |the |sample |mean |(x) |- |CORRECT |ANSWERS-
Possibility |distribution |of |the |sample |means |obtainable |from |all |possible |samples |of |size |n
|from |a |population |of |size |N
Normal |curve |- |CORRECT |ANSWERS-
Many |situations, |distribution |of |all |possible |sample |means |looks |roughly |like |this
|The |mean |of |all |possible |sample |means |is |equal |to |- |CORRECT |ANSWERS-
|Formula |on |slides
The |standard |deviation |of |all |possible |sample |means |is |less |than |-
|CORRECT |ANSWERS-Formula |on |slides
Sampling |error |- |CORRECT |ANSWERS-
Difference |between |the |sample |statistic |and |population |parameter
Also |called |variation
Interval |Estimator |(confidence |interval) |- |CORRECT |ANSWERS-
Formula |that |tells |us |how |to |use |the |sample |data |to |calculate |an |interval |that |estimates |t |he
|target |parameter
(Sample |mean) |+ |or |- |(Margin |of |error)
Variance |in |the |population |- |CORRECT |ANSWERS-Lower |variance |in |the |population |-
> smaller |(narrower) |confidence |interval
Sample |Size |- |CORRECT |ANSWERS-Larger |sample |size |-
> Smaller |(narrower) |confidence |interval
|Confidence |Level |- |CORRECT |ANSWERS-
Percentage |(ex: |0.95) |of |how |confident |we |are |that |the |CI |contains |the |population |mean
Larger |confidence |level |-> |wider |confidence |level
Steps |in |hypothesis |testing |- |CORRECT |ANSWERS-1.State |the |hypothesis
2. Specify |a |value |for |significance |level
3. Analyze |the |data
4. Make |conclusions |and |decisions
