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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
the length of three pieces of ropes are 140cm,150cm and 200cm.what is the greatest possible length to measure the given pieces of a rope?
sin2A+cos2A
Find the number of six-digit positive integers that can be formed using the digits 1,2, 3, 4, and 5 (every of which may be repeated) if the number must start with two even digits o
Danny is a contestant on a TV game show. If he gets a question right, the points for that question are added to his score. If he gets a question wrong, the points for that question
Example of addition of Signed Numbers: Example: (-2) + 3 + 4 = 0 - 2 + 3 + 4 Solution: Thus: (-2) + 3 + 4 = 5 Example: 10 + (-5) + 8 + (-7)
Write the doubles fact you used to solve the problem. 7 + 8 = 15
Q. How to plot Line Graphs? Ans. Line graphs can be useful in analyzing data. They are particularly helpful when you are interpolating or extrapolating information from y
A painting was purchased 11 years ago for $26900. It has just been sold for $78000. Calculate the flat rate of appreciation p.a.
solve for y given that 3sin^2 y+cos y-1=0 for 0y360
6 divided by 678
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