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Exam DA0-001 topic 1 question 111 discussion

Actual exam question from CompTIA's DA0-001
Question #: 111
Topic #: 1
[All DA0-001 Questions]

Which of the following best describes a 95% confidence interval?

  • A. There is a 95% probability that the population mean lies within the stated interval.
  • B. A stated range may contain 95% of the population mean, 95% of the time.
  • C. A set of ranges contains the population mean with 95% certainty.
  • D. A range contains 95% of the population mean.
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Suggested Answer: A 🗳️
by Swift_and_Quick at April 16, 2024, 11:04 p.m.

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Swift_and_Quick
6 months, 2 weeks ago
A. There is a 95% probability that the population mean lies within the stated interval. A 95% confidence interval means that if we were to repeat the process of sampling and constructing confidence intervals, about 95% of those intervals would contain the true population mean. It does not imply that there is a 95% probability that any given interval specifically contains the population mean, but rather that 95% of such intervals constructed in this way would include the population mean.
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