1. Giventhatzisthestandardnormalvariable(withmean0andstandarddeviation1),find a. P(-1.25<z<2.55) b.P(1.03<z<2.33) 2. Given that IQ scores are normally distributed with μ = 100 and σ = 15 , find probability that individual will have an IQ level: a. between 68 and 120 b. Above 90 c. below110 3. Theserumcholesterollevelsformeninoneagegrouparenormallydistributedwithamean
Math Statistics
In general, it is better to also show the numbers and methodology you used to calculate the answer, step by step, instead of simply showing the calculated value. Provide as many intermediate reducing calculations as you think are needed to