Step-by-step explanation:
H0: u = 44.3
Hi : u# 44.3
Z1-0.05/2
Z1-0.025
Z0.975 = 1.96
Z = x-u/s.d/√n
Z= 44.4 -44.3/2.6/√130
Z = (0.1×11.4018)/2.6
Z=0.44
Since the calcalculated value is less than the table value and does not fall in the rejection region we fail to reject the null hypothesis
We simply need to subtract 1,222 from 2,345. Once we do that we get 1,223. Hope that helps! :)
Step-by-step explanation:
You find the complex conjugate simply by changing the sign of the imaginary part of the complex number.
the answer is
9+3i