Suppose x is a normal random variable with mean μ = 80 and standard deviation σ = 9. find b such that p(80 ≤ x ≤ b.= 0.3. hint [see example 3.] (round your answer to one decimal place.)

The first octant inside the cylinder  x2  +  y2  =  16  and below the plane z = 3. 2 sketch the solid whose volume is given by the integral. ∫ π/2. 0. ∫ 2. 0. ∫ 9−r2. 0 r dz dr dθ, and  evaluate  the integral. 3  use spherical coordinates  to  evaluate. ∫∫∫.  e  z  dv  , where  e lies between  the  spheres x2+y2+z2  = 1 and  x2  +y2  +  z2  =  4  in 

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.