Answer to Question #315324 in Microeconomics for Shakil Uddin

Question

Problem 1:

Figures kept by McClure and Hanover Auctioneers for the past 5 years show that the weight of cattle brought to market has a mean of 950 kg and a standard deviation of 150 kg. What proportion of the cattle have weights of:

1. more than 1,250 kg
   
2. less than 850 kg
   
3. between 1,100 kg and 1,250 kg
   
4. between 800 kg and 1,300 kg?

 

Problem 2:

A set of observations follow a Normal distribution with a mean of 40 and a standard deviation of 4. What proportions of observations have values of:

1. greater than 46
   
2. less than 34
   
3. between 34 and 46
   
4. between 30 and 44
   
5. between 43 and 47?

Answer 1

$\frac{(1250-950)}{150} = 2$