Please answer a,b,c,d,e. Thanks! 6. The following sample data showed the deliver

Question

Please answer a,b,c,d,e. Thanks!

6. The following sample data showed the delivery time (number of days) required to fill orders for two companies Dawson Supply and Clark Distributor Dawson Supply Clark Distributor 8 10 13 7 10 11 10 7 15 40 a. Find the mean and the standard deviation of delivery times of Dawson Supply b. Find the mean and the standard deviation of delivery times of Clark Distributor c. Find the median and the mode of delivery times of Clark Distributor d. Are the delivery times of Clark Distributor skewed? If so, how? e. Which of the two companies provides the more consistent delivery times? Explain statistically.

Explanation / Answer

a) Mean = (11+10+9+10+11+11+10+11+10+10)/10= 10.3

Standard deviation =

b) Mean = 13.1

Standard deviation = 0.78

c) Median =10 ( 5th and 6th value is 10)

Mode = 10 ( occurs 3 times)

d) yes. Delivery times are skewed to the right.

e)Dawson Supply has more consistent delivery times because standard deviaton is lower.

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