Fit a least square linear approximation Y=a+bX for the data X: -1, 0, 1, 2, 3 and Y: 0, 1, 2 , 9, 29

Using the method of least square , fit a straight line to the following data : x 1 2 3 4 5 y 2 4 6 8 10

In a large consignment of oranges, a random sample of 500 oranges reveled that 65 oranges were bad. Prove that 99.73% of bad oranges in the consignment certainly lie between 8.5 % and 17.5%.

A normal population has mean of 6.8 and standard deviation 1.5. A sample of 400 members gave a mean of 6.75. Is the difference significant .

Obtain a relation of the form for ...