Suppose an online site claims that 55 officials in student services at CU earned an average š„ = $73,490 each year. ssume that Ļ = $9200 for salaries of college officials in student services. Find a 90% confidence interval for the population mean salaries of such personnel. What is the margin of error?
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Step 1
Step 1: Identify the given information - Sample size, \( n = 55 \) - Sample mean, \( \bar{x} = 73,490 \) - Population standard deviation, \( \sigma = 9,200 \) - Confidence level = 90% Show moreā¦
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