Determine the number of sample that must be taken from each grade level, if 95% decision is considered. YEAR LEVEL Grade 7 Grade 8 Grade 9 Grade 10 Grade 7 Grade 8 Grade 9 Grade 10 TOTAL 146 O O NUMBER OF STUDENTS ENROLLED 5,800 6,980 12,600 14.750 133 O O O O O 74 O O O SOLUTION SAMPLE SIZE 70 O O O 67 O O O SAMPLE 58 O O O 22 O O

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Q: find sample variance   41,45,48,49,52,53,55

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Q: LIST OF ALL SAMPLES OF SIZE 5 IN A POPULATION 2,5,6,8,10,12,13

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Q: Explain how you can select a systematic sample of size 7 from a population of size60

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