A fast-food chain aims to have an average waiting time of 75 seconds for customers who place an order via their drive-through. Thinking that the wait times could be longer, a manager conducted a random sample of 30 customers and timed their wait times. The average waiting time was 87 seconds with a standard deviation of 19.5 seconds.

Required:

a. State the H₀and the H_Afor this sample(2 marks)

b. Is the test a t or z test? (1 mark)

c. State the critical value and the statistic based on the test stated in part ii. Assuming a 10% level of significance. (3 marks)

d. Based upon the two values in part c, do we reject or fail to reject the H₀? State the reason why. What do we conclude?(2 marks)

Place answers in the space below

The following Python code is to perform a Chi-squared Test on a contingency table and it contains 5 errors

Required

State the 5 errors quoting the row number, the error and how to fix the error.