Math  /  Data & Statistics

QuestionC8 Q13 V1: The Excel file STATISTICSSTUDENTSSURVEYFORR contains the column BEFPULSEMIN (a numerical variable that measures student pulses before completing an online survey). For education purposes, consider this dataset to be a sample of size 60 taken from a much wider population for statistics students. Use R to find a 94%94 \% confidence interval for the mean of the population. Choose the most correct (closest) statement below. a. Your confidence interval is (72.88831,75.91169)(72.88831,75.91169) beats per minute and is narrower than a 90%90 \% confidence interval. b. Your confidence interval is (72.88831,75.91169)(72.88831,75.91169) beats per minute and it is wider than a 90%90 \% confidence interval created from this data. c. Your confidence interval is (72.95127,75.84873)(72.95127,75.84873) beats per minute and it is narrower than a 90%90 \% confidence interval created from this data. d. Your confidence interval is (72.95127,75.84873)(72.95127,75.84873) beats per minute and it is wider than a 90%90 \% confidence interval created from this data.

Studdy Solution
Compare the calculated confidence interval to the options provided.
Assuming the calculations yield a confidence interval close to one of the options, determine whether it is narrower or wider than a 90% confidence interval. A 94% confidence interval is wider than a 90% confidence interval because it provides more certainty.
If the calculated interval is approximately (72.95127,75.84873)(72.95127, 75.84873), then:
- The correct statement is: - d. Your confidence interval is (72.95127,75.84873)(72.95127, 75.84873) beats per minute and it is wider than a 90%90 \% confidence interval created from this data.
The correct choice is:
d \boxed{d}

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