Question: Recall Exploration 7.1 and Example 7.2 about the time needed to round first base using the narrow angle versus the wide angle. Th e previous

Recall Exploration 7.1 and Example 7.2 about the time needed to round first base using the narrow angle versus the wide angle. Th e previous exercise reports the summary statistics for the difference in times (narrow ˆ’ wide).
a. Use the formula of the standardized statistic

(*= X - 0° Sa/ Vn,

calculate its value. Interpret the value of the standardized statistic in the context of the study.
b. Use the formula for the confidence interval

х, + multiplier х Sa Vп,

to calculate the 95% confidence interval.

(*= X - 0 Sa/ Vn, , + multiplier Sa V,

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