Question 4 15.5 - 10 marks) ca) in out of men aged 2014 years old. 150 were found to be overweight in 1990 out of 800 men aged 20-14 years old, 200 were found to be overweight. At the cance level do the provide sucent evidence to conclude that for men aged 20 34 years old, a higher percentage were overweight in 1990 than in 1980, 10 years earliert 4) A director of realeshore tester several years of experience decided that the best measure of effectiveness of salesperson is the number of sales made rather than say the value of these Four of her salespeople over the past year had the following results Person ABC Sales 12 16 10 14 Question 4 (5+5 - 10 marks) 4.a) in 1980, out of 750 men aged 20-4 years old, 150 were found to be overweight. In 1990, out of 800 men aged 20 34 years old, 200 were found to be overweight. At the significance level do the data provide sufficient evidence to conclude that for men aged 20-34 years old, a higher percentage were overweight in 1990 than in 1980, 10 years earlier? 4.b) A director of real estate sales, after several years of experience, decided that the best measure of effectiveness of a salesperson is the number of sales made rather than, say, the value of their sales Four of her salespeople over the past year had the following results: Person ABCD Sales 12 16 10 14 At a 5 level of significance, can we conclude that the numbers of sales for each salesperson differs? Question 4 15.5 - 10 marks) ca) in out of men aged 2014 years old. 150 were found to be overweight in 1990 out of 800 men aged 20-14 years old, 200 were found to be overweight. At the cance level do the provide sucent evidence to conclude that for men aged 20 34 years old, a higher percentage were overweight in 1990 than in 1980, 10 years earliert 4) A director of realeshore tester several years of experience decided that the best measure of effectiveness of salesperson is the number of sales made rather than say the value of these Four of her salespeople over the past year had the following results Person ABC Sales 12 16 10 14 Question 4 (5+5 - 10 marks) 4.a) in 1980, out of 750 men aged 20-4 years old, 150 were found to be overweight. In 1990, out of 800 men aged 20 34 years old, 200 were found to be overweight. At the significance level do the data provide sufficient evidence to conclude that for men aged 20-34 years old, a higher percentage were overweight in 1990 than in 1980, 10 years earlier? 4.b) A director of real estate sales, after several years of experience, decided that the best measure of effectiveness of a salesperson is the number of sales made rather than, say, the value of their sales Four of her salespeople over the past year had the following results: Person ABCD Sales 12 16 10 14 At a 5 level of significance, can we conclude that the numbers of sales for each salesperson differs