1. Given the follow 215. Find the minir

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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Chapter4: Equations Of Linear Functions
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Solve the following problems.
1. Given the following information: confidence level= 99%, margin of error= 85 and standard deviation =
215. Find the minimum sample size required to estimate an unknown population mean.
2. Average Senior High school annual cost of tuition fee for all private schools last year was 46,300
pesos. A random sample of costs this year for 45 private schools indicated that teh sample mean was
47,800 pesos and a sample standard deviation was 5,600 pesos. At the 0.10 level of significance,is there
sufficient evidence to conclude that the cost has increased? Using the 5 steps in testing hypothesis.
Transcribed Image Text:1. Given the following information: confidence level= 99%, margin of error= 85 and standard deviation = 215. Find the minimum sample size required to estimate an unknown population mean. 2. Average Senior High school annual cost of tuition fee for all private schools last year was 46,300 pesos. A random sample of costs this year for 45 private schools indicated that teh sample mean was 47,800 pesos and a sample standard deviation was 5,600 pesos. At the 0.10 level of significance,is there sufficient evidence to conclude that the cost has increased? Using the 5 steps in testing hypothesis.
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