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Desiree's test score are 77,90,66

Desiree's test score are 77,90,66 and 82.what score does she need on the last test in order to average 80 on her tests ?
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2. asked by Lovepreet
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Alice earned a score of 940 on an IQ test.The mean test score was 850 with a standard deviation of 100.(Assume that test scores
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2. asked by koo
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Karl's scores on the first five science tests are shown in the table.Test 1 Test 2 Test 3 Test 4 Test 5 85 84 90 95 88 Part A.
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2. asked by Wendy
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Ram earned a score of 940 on a national achievement test. The mean test score was 850 with a standard deviation of 100.what
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2. asked by johnprabhakaran
3. 1,591 views
The table below shows the scores of a group of students on a 10-point quiz.Test Score Frequency 3 0 4 2 5 2 6 1 7 2 8 3 9 0 10 4
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2. asked by shley
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The table below shows the scores of a group of students on a 10-point quiz.Test Score Frequency 3 1 4 1 5 2 6 3 7 1 8 1 9 1 10 4
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2. asked by Mike
3. 1,996 views
The table below shows the scores of a group of students on a 10-point quiz.Test Score Frequency 3 0 4 2 5 2 6 1 7 2 8 3 9 0 10 4
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2. asked by LEE
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The table below shows the scores of a group of students on a 10-point quiz.Test Score Frequency 3 0 4 2 5 2 6 1 7 2 8 3 9 0 10 4
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2. asked by lee
3. 8,926 views
The table below shows the scores of a group of students on a 10-point quiz.Test Score Frequency 3 1 4 3 5 1 6 1 7 0 8 3 9 4 10 3
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2. asked by Anonymous
3. 4,719 views
i need help: A national achievement test is administered annually to 9th graders. The test has a mean score of 100 and a
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2. asked by mufasa
3. 1,071 views