Asked by Bailey Gardenhire on Jul 03, 2024
Assume that the population distributions of times (in minutes) for two different skiers to race the same course are normal with equal variances. Two random samples, drawn independently from the populations, showed the following statistics. 
Construct and interpret a 95% confidence interval for the true difference in average time of skiers to race the same course.
What is the 95% confidence interval? (CI)
CI = ______________ Enter (n1, n2)
The sample evidence ______________ support that the two skiers, on average, have different race times.
Confidence Interval
An array of values derived from statistical analysis of a sample, likely including the value of an unknown population metric.
Average Time
The mean duration or period taken by a set of events or tasks, calculated by dividing the sum of all times by the number of events.
Race Times
The durations taken to complete a race, often used in statistical analyses to compare the performance of different athletes or conditions.
- Understand the meaning of confidence intervals in determining the variance between two population means.
Learning Objectives
- Understand the meaning of confidence intervals in determining the variance between two population means.
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