Use the following scenario to answer the questions

Use the following scenario to answer the questions.

Cold Stone Creamery has recorded the demand for a particular flavor of ice cream during the first seven days of July. The results are as follows:

Predict the sales for the 8^th day of July using a weighted 3-day moving average with weights of .5, .4, and .1.

The data below represent the findings from a study conducted at a factory that manufactures film canisters. For 21 days, 500 film canisters were sampled and inspected. The following table lists the number of defective film canisters for each day. 

Construct a control p chart; are there any proportions outside the control limits?

Paste charts from Excel below:

Is the process in a state of statistical control? Why?