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STAT*2060: Statistics for Business DecisionsWinter 2018Term Test 3Friday, March 23 (3:30pm-4:20pm)Name:Student Number:Email:@uoguelph.ca•This test contains 8 pages (cover page + 6 question pages + back page blank). Please check thisnow!•There are 6 written response questions, with allotted marks for each question indicated besidethe question number.•There are a maximum of 18 marks available.•You are permitted one letter-size, single-sided, hand-written reference sheet, along with a stand-alone calculator. No other aides are permitted.•Answer the questionsonlyin the spaces provided. Work not in the spaces provided will not bemarked.•For questions requiring calculations, showallyour work. Answers that are correct but have nowork shown will not receive full marks.1
1. (4 marks) The calorie count in strawberry yogurt known to follow a normal distribution with apopulation standard deviation of 45 calories, while the calorie count in vanilla yogurt is knownto follow a normal distribution with a population standard deviation of 48. A sample of 12randomly selected yogurts of each type yielded sample mean calorie counts of¯X1= 172 caloriesand¯X2= 159 calories, respectively.