Italian Home Cuisine claims that 82% of its orders will be ready to serve within 15 minutes of the time the order is placed. A sample of 70 orders revealed that 50 were served within the given time duration. At the 0.01 significance level, can we conclude that less than 82% of the orders are served in less than 15 minutes?

1 - What is the decision rule? (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)

In other words, Reject H0 if z < [ANSWER]

2 -Compute the value of the test statistic. (Negative amount should be indicated by a minus sign. Round the intermediate values and final answer to 2 decimal places.)

3 - What is your decision regarding the null hypothesis?

[ Student's note: in the answer section, there is an empty box to be filled and right next to it, it says H0 : 0.8]

[ ANSWER HERE ] H0 : 0.8