Question

hw section 3.2 - standard deviation
score: 3/5 answered: 2/3
question 3
suppose that we are studying the amount of time customers wait in line at the check old navy. the average wait time at both stores is five minutes. at the gap, the stand wait time is 2 minutes; at old navy the standard deviation for the wait time is 5 min
because old navy has a higher standard deviation, we know that there is more variatio times at old navy. overall, wait times at old navy are more spread out from the av the gap are select an answer near the average.
question hel more concentrated uctor
less concentrated
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Explanation:

Step1: Recall Standard Deviation Concept

Standard deviation measures the spread (variability) of data around the mean. A smaller standard deviation means data is more concentrated near the mean; a larger one means more spread out (less concentrated near the mean).

Step2: Analyze the Given Data

• Both stores have a mean (average) wait time of 5 minutes.
• The Gap has a smaller standard deviation (2 minutes) than Old Navy (5 minutes).

Step3: Relate to Concentration

Since the Gap’s standard deviation is smaller, its wait times are closer to the mean (more concentrated near the average) compared to Old Navy. So for the Gap, wait times are more concentrated.

Answer:

more concentrated