Question

For a sample of 30 Palestinian men aged 20-24, the IQ levels are measured as
“Below normal”, “Normal”, or “Above normal”.
In this study, the variable is
a.
the number of Palestinian men
b.
measure of the IQ level
c.
the Palestinian man aged 20-24
d.
the age of Palestinian men

Non-random sampling errors are introduced due to technically faulty observations or during the analysis of the collected data

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خطأ

1. If the matrix [3 1 -1 2]  satisfies the equation A²-5A+7I =0 then find the inverse of A using this equation where I is the identity matrix of order 2 and 0 is the zero matrix of oder 2

New observations is

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The mean of 5

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