Question: A) what is the standard deviation?B) calculate the UCLC) calculate the LCLD) write a conclusion Question 2 (10 points) The average grocery bill at the

A) what is the standard deviation?B) calculate the UCLC) calculate the LCLD) write a conclusion

Question 2 (10 points) The average grocery bill at the cash register for a random sample of 17 shoppers at a local COSTCO is $53.80 with a sample standard deviation of $18.40. Determine the 80% confidence interval for this sample. a) What is the standard deviation? (2 marks) b ) Calculate the UCL. Must show all calculations (3 marks) C) Calculate the LCL. Must show all calculations (3 marks) d) Write a conclusion in your words. (2 marks)

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