sireesha

draw a simple random sample of 15 students from your class,and calculate sample mean and sample variance of their heights(use lottery method)

three blocks of coal were analyzed by four chemists and the ash-content in the block was found to be under blocks chemists 1 11 111 1V A 18 15 15 17 B 17 16 14 14 C 13 16 15 14 DO THE blocks differ in their ash-content?do the chemists differ significantly...

collect the annual sales of a super market for 10 years and fit a straight line trend to the data collected and find the trend values

Explain laws of supply and demand by taking atleast 1 item for each type of commodity.

1. Draw a simple random sample of 15 students from your class, and calculate sample mean and sample variance of their heights(use Lottery method ) 2. Three blocks of Coal were analyzed by Four Chemists and the ash-content in the blocks was found to be as...