The executives at the baby gear company, Skip Hop, identifie…
The executives at the baby gear company, Skip Hop, identified a major problem with one of their products. Many customers are sending complaints that one of the accessories of the Skip Hop Activity Center Play Mat imposes a choking risk to the little babies. Skip Hop is pretty sure that only 4% of their activity center play mat has defective accessories, but they would like to do a study to confirm this number. How large a sample should Skip Hop test to estimate the true proportion within 1% with 95% confidence (round up to the nearest whole number)? *Note: Z-value for 95% confidence = 1.96
Read DetailsAn online education program company found that 73% of prekin…
An online education program company found that 73% of prekindergarten children ages 3 to 5 whose mothers had a bachelor’s degree or higher have signed up for the annual membership of their program. How large a sample is needed to estimate the true proportion within 3% with 95% confidence (round up to the nearest whole number)? *Note: Z-value for 95% confidence = 1.96
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