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Statistical inference
This is the process of drawing conclusions about attributes of a population based upon information contained in a sample or taken from the population.
This is divided into estimation of parameters and testing of hypothesis. Symbols for statistic of population parameters are as given below:
Sample Statistic
Population Parameter
Arithmetic mean
x¯
µ
Standard deviation
s
σ
Number of items
n
N
1. Consider the model Y t = β 0 + β 1 X t + ε t , where t = 1,..., n. If the errors ε t are not correlated, then the OLS estimates of β 0 and β
The perimeter of a rectangular swimming pool is 60m. The length of the pool is 4 m more than the width. What is the width of the pool?
Poisson Probability Distribution - It is a set of probabilities which is acquired for discrete events which are described as being rare. Occasions similar to binominal distri
Classical Probability Consider the experiment of tossing a single coin. Two outcomes are possible, viz. obtaining a head or obtaining a tail. The probability that it is a tail
A 3 km pipe starts from point A end at point B Population = 3000 people Q = 300 L/day/person Roughness = cast ion pipe Length of the pipe = 3km Case 1 From A to B
Learning geometric progression vis-á-vis arithmetic progression should make it easier. In geometric progression also we denote the first t
A fish tank has the base area of 45 cm3 and is filled to the depth of 12 cm.If the height is 25 cm then how much more will be needed to fill the rest of the tank?
find the diameter of circle whose circumference is 26.51
Lori ran (5)1/2 miles Monday, (6)1/4 miles Tuesday (4)1/2 miles Wednesday and (2)3/4 mile on Thursday what is the average number of miles lori ran ? To find the average, add
x+3=2
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