Assignment Task: Calculating Confidence Intervals
Instructions:
In this assignment, you will calculate confidence intervals for the quantitative variables in the Heart Rate Dataset.
Steps:
Part 1: Open the Heart Rate Dataset in Excel and identify the quantitative variables
Part 2: Make sure the data is sorted by category (e.g. male-at-rest, female at-rest, etc.)
Part 3: Use the Data Analysis tools of Excel to construct 95% and 99% confidence intervals for all 8 categories of the sorted quantitative variables. Excel will calculate the margin of error given as the "confidence interval" in the output. Use this margin of error to create your 8 confidence intervals by both adding and subtracting it from the sample mean (calculated in unit 3). This creates a range of values that is the confidence interval.
Part 4: Create a Word document, and use your calculated results to explain what the confidence intervals tell us.
Part 5: Compare the 99% and 95% intervals and explain why one is larger than the other even though we use the same sample mean value.
APA style.
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Attachment:- Confidence Intervals.rar