A random sample of 10 houses heated with natural gas in a pa

A random sample of 10 houses heated with natural gas in a particular area is selected, and the amount of gas (in therms) used during the month of January is determined for each house. The resulting observations are as follows:

87  119  135  98  117  106  145  153  122  102

Solution

Hence point estimate for muj is Sample mean =

118.4

For 10000 houses averages estimated is 118.4

Hence T = total amount of gas used by all of these houses during January

= 10000(118.4)

1184000