1.  Find the margin of error for the mean weight ofmedium Antonio’s cheese pizza if a sample of size n =16 produces a sample standard deviation of4.220 g, assuming 95% confidence.Round to two decimals.

2. The mean and standard deviation for voltages of power packslabeled as 12 volts for a sample of 25 are asfollows:

	=	12.34
s	=	0.3

Please develop a 95.00% confidence interval forthe sample above. (Round to 3 decimal places.)
Lower limit = ?

Upper limit = ?

3. The actual voltages of power packs labeled as 12 volts for asample are as follows: 11.90,11.79, 11.38,11.79, 12.21,11.95, 11.38,11.01.
Please develop a 90.00% confidence interval forthe sample above.

Lower limit = ?

Upper limit = ?

4. Assuming the random variable X is normally distributed,compute the lower and upper limits of the 90%confidence interval for the population mean if a random sample ofsize n=7 produces a sample mean of12 and sample standard deviation of6.00. Round to two decimals.

Lower Limit = ?,

Upper Limit = ?

5. A random sample of 22 scalpers’ ticketprices for a rock concert has sample mean $44.00and sample standard deviation of $6.02. What isthe upper and lower limit of the 95% confidenceinterval of mean scalpers’ ticket prices? Round to twodecimals.

Lower Limit = ?

Upper Limit = ?