When a process is in control, it results in there being, on average, 16 defects per unit of output. c-chart limits of 8 and 24 would lead to a

4.56%

Explanation:

From the given information:

In a c-chart limit

UCL =

where;

UCL = 24

Then:

z 2.0

At z = 2.0, the value represents the probability of 95.44% of not making a Type 1 error.

This implies that the probability of making a Type 1 error = 1 - 95.44%

= 4.56%

                                             Rubin Enterprises

                                                General journal

1. Dr  Account receivable  27500

             Cr Sales revenue         27500

    (To record sales )

2. Dr Cash   5870

         Cr Account receivable   5870

   (To record collection against receivable)

3. Dr Sales discount   1500

          Cr  Account receivable   1500

   (To record sales discount)

4. Dr Sales return and allowances 350

              Cr Cash                                       350

   (To record allowance )