Observations from a population with a standard deviation
A random sample of 50 observations from a population with a standard deviation of 25 and computed the sample mean to be 100. Estimate the population mean of:
a) 90% confidence
b) 95% confidence
c) 99%confidence
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The Census bureau has estimated that the average salary of the college-educated male is $75,000. The standard deviation of their measurements of salaries is $2,000. They also assume that salaries are normally distributed, for convenience of their
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A research team conducted a critical study and using data they gathered in their random experiment a 95% confidence interval for the population mean was constructed.
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