Determine the margin of error for a 95% confidence interval to estimate the population mean when s=37 for the sample sizes below.
Solve for c) n=46.
a) GIVEN:
Sample size
Sample standard deviation
FORMULA USED:
The formula for margin of error for a 95% confidence interval to estimate the population mean is,
where is the z critical value at 95% confidence level.
CRITICAL VALUE:
The two tailed z critical value at 95% confidence level is .
CALCULATION:
The margin of error for a 95% confidence interval to estimate the population mean is,
The margin of error for a 95% confidence interval to estimate the population mean for sample size is .
b) GIVEN:
Sample size
Sample standard deviation
FORMULA USED:
The formula for margin of error for a 95% confidence interval to estimate the population mean is,
where is the z critical value at 95% confidence level.
CRITICAL VALUE:
The two tailed z critical value at 95% confidence level is .
CALCULATION:
The margin of error for a 95% confidence interval to estimate the population mean is,
The margin of error for a 95% confidence interval to estimate the population mean for sample size is .
c) GIVEN:
Sample size
Sample standard deviation
FORMULA USED:
The formula for margin of error for a 95% confidence interval to estimate the population mean is,
where is the z critical value at 95% confidence level.
CRITICAL VALUE:
The two tailed z critical value at 95% confidence level is .
CALCULATION:
The margin of error for a 95% confidence interval to estimate the population mean is,
The margin of error for a 95% confidence interval to estimate the population mean for sample size is .
Determine the margin of error for a 95% confidence interval to estimate the population mean when...
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