I applied online through the Oracle page, and they contacted me immediately, which was scary for me. I received an e-mail with an online test to complete, which had 13 questions. The test covered:

• 15 Analytical Multiple Choice Questions focusing on sets, trend analysis, calculus, statistics, etc.
• 5 open-ended basic SQL questions.
• 3 open-ended database normalization questions.
• 1 Multiple Choice English language comprehension question.
• 1 open-ended language question (this part should be 200-300 words).

The entire online assessment test was conducted through hackerrank.com and lasted 90 minutes.

Personally, I did not complete the quiz within a couple of days. I took my time to prepare, and I was right; it is a difficult test. I used apps like ‘The Impossible Interview’ and ‘The Aptitude Interview’ from the iTunes App Store to prepare, and they were a help.

An analyst at Oracle is conducting a satisfaction survey, sampling from a list of 10,000 new users.

The list includes:

• 2,500 French users
• 2,500 German users
• 2,500 Italian users
• 2,500 Portuguese users

The analyst selects a sample of 400 users by randomly sampling 100 users of each country.

Is this an example of a simple random sample?