7) The state education commission wants to estimate the proportion of tenth grade students that have reading skills at or below the eighth-grade level. How large a sample would be required to estimate the proportion of tenth graders reading at or below the eighth-grade level using 90% confidence level with a margin of error of 0.05 if: a) p 0.10 from an earlier study b) no estimate of p is available

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7) The state education commission wants to estimate the proportion of tenth grade students
that have reading skills at or below the eighth-grade level. How large a sample would be
required to estimate the proportion of tenth graders reading at or below the eighth-grade
level using 90% confidence level with a margin of error of 0.05 if:
a) p 0.10 from an earlier study
b) no estimate of p is available
Transcribed Image Text:7) The state education commission wants to estimate the proportion of tenth grade students that have reading skills at or below the eighth-grade level. How large a sample would be required to estimate the proportion of tenth graders reading at or below the eighth-grade level using 90% confidence level with a margin of error of 0.05 if: a) p 0.10 from an earlier study b) no estimate of p is available
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