AnswersCA-Statistics and Probability BMore about Confidence Intervals

More about Confidence Intervals Answers

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A 90% confidence interval for the mean time it takes to run 1 mile for all high school track athletes is computed from a simple random sample of 200 track athletes and is found to be 6.2 ± 0.8 minutes. We may conclude that:

A
there is a 90% probability that the true mean is 6.2 minutes and a 90% chance the margin of error is 0.8.
B
90% of the sample mean run times will fall between 5.4 to 7.0 minutes.
C
there is a 90% probability the true mean run time is captured in the interval from 5.4 to 7.0 minutes.
D
if we took many, many random samples of the same size and computed their confidence intervals, approximately 90% of the intervals will capture the true mean running time.
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172329✔ 95

A
17
B
23
C
29
D
95
3

✔ true proportion of adults whoproportion of adults who said theysample of those who report they

A
true proportion of adults who
B
proportion of adults who said they
C
sample of those who report they
170798

⇒ 300

Answer:

170798

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