When investigating times required for drive-through service, the following resul

Question

When investigating times required for drive-through service, the following result (in seconds) were obtained. A) Restaurant A: 46 sec: 260.79 sec^2: 16.15 sec Restaurant B: 44 sec: 285.64 sec^2: 16.90 sec There is more variation in the times for restaurant B. B) Restaurant A: 44 sec: 260.79 sec^2: 16.15 sec Restaurant B: 46 sec: 245.64 sec^2: 15.67 sec There is more variation in the times for restaurant A. C) Restaurant A: 44 sec: 260.79 sec^2: 16.15 sec Restaurant B: 46 sec: 285.64 sec^2: 16.90 sec There is more variation in the times for restaurant B. D) Restaurant A: 44 sec: 298.34 sec^2: 17.27 sec Restaurant B: 46 sec: 285.64 sec^2: 16.90 sec There is more variation in the times for restaurant A. The test scores of 40 students are summarized in the frequency distribution below. Find the standard deviation.

Explanation / Answer

Solution21:

Range ,variance and standard deviation for Restaurant A

44,260.79,16.15

Range ,variance and standard deviation for Restaurant B

46,285.64,16.90

ANSWER C FROM GIVEN CHOICES

Mean 128.75 Mean 131.75 Standard Error 5.709485 Standard Error 5.975396 Median 123.5 Median 131.5 Mode #N/A Mode #N/A Standard Deviation 16.14886 Standard Deviation 16.90097 Sample Variance 260.7857 Sample Variance 285.6429 Kurtosis -0.37934 Kurtosis -1.66091 Skewness 0.975008 Skewness 0.098628 Range 44 Range 46 Minimum 110 Minimum 110 Maximum 154 Maximum 156 Sum 1030 Sum 1054 Count 8 Count 8

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