Homework: Section 3.3 Coefficient of Variation, Z score, and Score: 0 of 1 pt 3.

Question

Homework: Section 3.3 Coefficient of Variation, Z score, and Score: 0 of 1 pt 3.3.24 Save 5 of 9 (4 complete) | Hw Score: 26.85%, 2.42 of 9 Question Help Assume the average price of a laptop computer is $750 with a standard deviation of $70. The following data represent the prices of a sample of laptops at an electronics store. Calculate the z-score for each of the following prices. a) $630 c) $544 e) $998 b) $923 d) $794 a) The z-score of $630 is.(Round to two decimal places as needed.) Enter your answer in the answer box and then click Check Answer. 2 Clear All Check Answer remaining

Explanation / Answer

mean is 750 and s is 70

z is given as (x-mean)/s

a) for 630, z is (630-750)/70=-1.71429

b) for 923, z is (923-750)/70=2.47

c) for 544, z is (544-750)/70=-2.94

d) for 794, z is (794-750)/70=0.6286

e) for 998, z is (998-750)/70=3.5429

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