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 .
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Obtain a relation of the form for ...
When H0 is wrong and we may accept it is : Type I Error , Producer’s risk Type I Error , Consumer’s risk Type II Error , Producer’s risk Type II Error , Consumer’s risk
Q1) Find the curve of second degree of regression of y on x (
Fit a straight line to the following data:’ x 0 1 2 3 4 y 1 1.8 3.3 4.5 6.3
The average income of persons was Rs.210 with a S.D. of Rs. 10 in sample of 100 people of a city. For another sample of 150 persons, the average income was Rs. 220 with S.D. of Rs. 12. ...