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Find the margin of error for the given values of c, a, and n. c=0.90, a 2.9, n = 100 Click the icon to view a table of common critical values. E=(Round to three decimal places as needed.)
A cheese processing company wants to estimate the mean cholesterol content of all one-ounce servings of a type of cheese. The estimate must be within 0.76 milligram of the population mean (a) Determine the minimum sample size required to construct a 95% confidence interval for the population mean. Assume the population standard deviation is 3.18 milligrams. (b) The sample mean is 31 milligrams. Using the minimum sample size with a 95% level of confidence, does it seem likely that the population mean could be within 3% of the sample mear within 0.3% of the sample mean? Explain. Click here to view page 1 of the Standard Normal Table. Click here view page 2 of the Standard Normal Table GED (a) The minimum sample size required to construct a 95% confidence interval is servings (Round up to the nearest whole number)
An admissions director wants to estimate the mean age of all students enrolled at a college. The estimate must be within 1.7 years of the population mean. Assume the population of ages is normally distributed (a) Determine the minimum sample size required to construct a 90% confidence interval for the population mean. Assume the population standard deviation is 1.8 years (b) The sample mean is 20 years of age. Using the minimum sample size with a 90% level of confidence, does it seem likely that the population mean could be within 10% of the sample mean? within 11% of the sample mean? Explain Click here to view page 1 of the Standard Normal Table. Click here to view page 2 of the Standard Normal Table (a) The minimum sample size required to construct a 90% confidence interval is students. (Round up to the nearest whole number)