2. supermarket manager is interested in customer transactions to assist with budgeting as well as product placement throughout the store. Of particular interest to the manager is how long the customer spends in the store and whether the customer uses a self- service register for their transaction, Data has been collected from 50 customers and is provided in the fie FAT 1 Version A data.xlsx a) Use Linear Regression Excel to state the 95% confidence interval for the proportion of all Customers who use a self-service register. b) Interpret the confidence interval stated in part a) The supermarket manager is also interested to know if there is a difference in average shopping time for customers using the self-serve register and those using an assisted register. C. Use Linear Regression in Excel to conduct a hypothesis test at the 1% level of significance to determine if the shopping time is the same for customers using self-serve and assisted registers

2. supermarket manager is interested in customer transactions to assist with budgeting as well as product placement throughout the store. Of particular interest to the manager is how long the customer spends in the store and whether the customer uses a self- service register for their transaction, Data has been collected from 50 customers and is provided in the fie FAT 1 Version A data.xlsx a) Use Linear Regression Excel to state the 95% confidence interval for the proportion of all Customers who use a self-service register. b) Interpret the confidence interval stated in part a) The supermarket manager is also interested to know if there is a difference in average shopping time for customers using the self-serve register and those using an assisted register. C. Use Linear Regression in Excel to conduct a hypothesis test at the 1% level of significance to determine if the shopping time is the same for customers using self-serve and assisted registers

Linear Algebra: A Modern Introduction

4th Edition

ISBN:9781285463247

Author:David Poole

Publisher:David Poole

Chapter7: Distance And Approximation

Section7.3: Least Squares Approximation

Problem 31EQ

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