%م السبت 11 أكتوبر A moodle.nct.edu.om III. Answer the following: 1. A survey is conducted to know the preference on soft drinks of 250 consumers. Out of these 100 consumers are school children and...

Extracted text: %م السبت 11 أكتوبر A moodle.nct.edu.om III. Answer the following: 1. A survey is conducted to know the preference on soft drinks of 250 consumers. Out of these 100 consumers are school children and 150 are college students. A sample of 25 is to be collected for the study by using stratified sampling method. What is the sample proportion? 2. If we need to select 20 i-phone mobile users from 300 users, what would be the samples if you choose in a systematic sampling method? What is the sampling interval and write down