Q 12 In Excel, what tlr syntax cakuhting tlr probability dersity fuurtön (PDF) ofa rx.»rnul a) NORM.DENSITY(x, nean, stardard_dev) b) NORM.S.DIST(x, nean, standard_dev, cunuhtive) c) NORM.DIST(x, nean, standard_dev, cumlative) d) NORM.PDF(x, nean, stamlard_dev)

Suppose a random variable X has the following probability density function: open curly brackets table attributes columnalign left columnspacing 1.4ex end attributes row cell 1 over x end cell cell 1 less than x less than A end cell row 0 cell O t h e r w i s e end cell end table closeFind standard deviation, sigma? (Hint :first find the value of A so that f left parenthesis x right parenthesis is a probability density function and then calculate standard deviation).

The expression |y(x, t)|2 stands for(a) normalisation (b) position(c) time probability density (d) position probability density

Which function in Excel is used to calculate the standard deviation of a sample?  A. VAR  B. STDEV.P  C. STDEV.S  D. VAR.P

Suppose the random variable X has the following probability density function(PDF): open curly brackets table attributes columnalign left columnspacing 1.4ex end attributes row cell fraction numerator open vertical bar x close vertical bar over denominator 4 end fraction end cell cell negative 2 space less or equal than x less or equal than 2 end cell row 0 cell O t h e r w i s e end cell end table close If mu (X) = E(X) = 0, find Variance (X) ?

Which of the following can be determined as appropriate keyword density?  0.1-0.2% 1-2% 8-10% More than 10%