A Consumer Psychologist Wanted To Know If Customers Really Are Into Merchandise By Sales Clerks Who Smile More. She Gave Special Instr Department Stores And Recorded Sales At The End Of The Week. Clerks Stores Received Instructions To Be Especially Courteous Other Stores Were Simply Instructed To Be Courteous. Sales (In Thousands Listed Below. Do Customers

please work out problem by hand

 

A consumer psychologist wanted to know if customers really are influenced to buy more merchandise by sales clerks who smile more. She gave special instructions to clerks at eight large department stores and recorded sales at the end of the week. Clerks in four of the randomly selected stores received instructions to be especially courteous and to be sure to smile a lot. Clerks at four other stores were simply instructed to be courteous. Sales (in thousands of dollars) for the 8 stores are listed below. Do customers buy more from smiling sales clerks? a. Using the .05 significance level, solve this using the 5 steps of hypothesis testing. Show al work (submit your hand calculations with this CoK!) (10 pts) b. State (in words) what the findings are (including group means), and report the appropriam -string below. (7 pts) Sales Smiling clerks Control clerks 36 40 40 31 36 27 44 30 Conclusion: HO 01-02-0 += f=(4-1)-(4-1) S 3+ 3 cf=6 Costomers by more from +16=238. P