Please help, Please also upload the excel so i can see the formula. Thanks

Kellogg's has a process for filling boxes of Frosted Flakes cereal with 18 ounces of product when it is operating properly. Too much product in the box is wasteful to Kellogg's, whereas too little product can lead to customer complaints. To determine if the filling process is performing as it should, a random sample of 40 boxes was examined, and the average weight of a box was found to be 18.06 ounces. Historically, the filling process has standard deviation of 0.25 ounces. Follow the five (or six) steps for conducting a two-tailed hypothesis test to determine if the filling process is operating properly, using a = 0.05. (Step 1) Identify the Null Hypothesis ad Alternative Hypothesis (Step 2) Calculate the test statistic (Step 3) Calculate the p-value and critical value (Step 4) What is your conclusion about the Null Hypothesis? (Step 5) What is your final conclusion about the Original Claim