A candy manufacturer selected a random sample of candy bars

A candy manufacturer selected a random sample of candy bars from its newest machine in order to determine if it is putting the right amount of chocolate in each bar. These machines may vary a little in how much chocolate they deposit per bar at a standard deviation of 0.18 ounces. For their sample they randomly selected 34 bars and weighed the chocolate in each bar. The sample average came to 4.73 ounces.

Calculate a 93% confidence interval in order to find the likely location of the mean amount of chocolate per bar that this machine deposits.

You will have to submit values from the problem as well as intermediate calculated values rounded to 3 decimal places. You will need to use R to get your value for z.

A)

n =
=
x =
CL =
=

5 points   

B)

Using R, calculate z to 3 decimal places.

2 points   

C)

Calculate the EBM (3 decimal places)

2 points   

D)

What is the lower bound to this confidence interval? (3 decimal places)

2 points   

E)

What is the upper bound to this confidence interval? (3 decimal places)