a This table shows the distribution of scores on the SAT Critical Reading test for 2011 college-bound seniors. Score 700-800 600-690 500-590 400-490 300-390 200-290 Number of Students . 76,565 256,676 480,588 531,429 247,836 54,029 1,647,123 Proportion of Students 0.0465 0.1558 0.2918 0.1505 Total Source: 2011 College-Bound Seniors Total Group Report, College Board, professionals.collegeboard.com/profdownload/cbs2011_total_group_report.pdf a. What are the missing numbers in the third column of this table? b. Suppose that you take a random sample of 1,000 scores from this population of SAT Critical Reading scores. What is the expected number of scores in the category 700-800? In the category 400-490?
a This table shows the distribution of scores on the SAT Critical Reading test for 2011 college-bound seniors. Score 700-800 600-690 500-590 400-490 300-390 200-290 Number of Students . 76,565 256,676 480,588 531,429 247,836 54,029 1,647,123 Proportion of Students 0.0465 0.1558 0.2918 0.1505 Total Source: 2011 College-Bound Seniors Total Group Report, College Board, professionals.collegeboard.com/profdownload/cbs2011_total_group_report.pdf a. What are the missing numbers in the third column of this table? b. Suppose that you take a random sample of 1,000 scores from this population of SAT Critical Reading scores. What is the expected number of scores in the category 700-800? In the category 400-490?
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Transcribed Image Text:a This table shows the distribution of scores on the SAT Critical Reading test for
2011 college-bound seniors.
Score
700-800
600-690
500-590
400-490
300-390
200-290
Number of
Students
76,565
256,676
480,588
531,429
247,836
54,029
1,647,123
Proportion of
Students
0.0465
0.1558
0.2918
0.1505
Total
Source: 2011 College-Bound Seniors Total Group Report, College Board,
professionals.collegeboard.com/profdownload/cbs2011_total_group_report.pdf
a. What are the missing numbers in the third column of this table?
b. Suppose that you take a random sample of 1,000 scores from this population
of SAT Critical Reading scores. What is the expected number of scores in the
category 700-800? In the category 400-490?
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