PART 1: An important factor in selecting database software is the time required

Question

PART 1: An important factor in selecting database software is the time required for a user to learn how to use the system. To evaluate three potential brands (A, B, and C) of database software, a company designed a test involving ten different employees: five have used database software before; and five having no database software experience. Each of the five employees is trained on each of the three different brands. the amount of time (in hours) needed to learn the software is recorded in the table below.

Based on the data, which of the following statement is not correct.

PART 2:

Which of the following statement is correct?

Employee Database Experience Software A Software B Software C 1 Having Experience 17 17 23 2 Having Experience 18 17 23 3 Having Experience 14 13 19 4 Having Experience 12 11 18 5 Having Experience 19 17 22 6 No Experience 23 16 36 7 No Experience 30 29 28 8 No Experience 27 14 32 9 No Experience 26 18 30 10 No Experience 30 21 29 ? 0.05

Explanation / Answer

Part - 1: The statistical software output for this problem is:

Analysis of Variance results:
Data stored in separate columns.

Column statistics

ANOVA table

Hence,

Option 2 is correct.

Part - 2: Option 3 is correct.

Column n Mean Std. Dev. Std. Error Software A 10 21.6 6.5183502 2.0612833 Software B 10 17.3 4.9676733 1.5709162 Software C 10 26 5.8878406 1.8618987

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