AnswersAA - F26 Advanced AlgebraIntroduction to Normal Distributions

Statistical Inferences Answers

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Which of the following criteria are necessary conditions for making a statistical inference?

A
sample size greater than 30, or an approximately normal data set
B
sample size greater than 100
C
convenience sample
D
simple random sample
E
systematic sample
2
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A confidence level of 95% means:

A
95% of the time, sample percentages will fall above the mean.
B
95% of the time, population data will fall between 149.61 and 150.39.
C
the mean of 95% of the adults in the sample was 150.

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