Question 1105420
Less than 175 is z<(175-170)/10, (x-mean)/sd, and sd is the sqrt (var)
z<+(5/10) or +(1/2)
Probability is 0.6915.

The probability of being symmetric to the mean and having a probability of 0.50 requires the z-value of 0.2500 probability, which is +/-0.675
z=0.675=(x-170)/10
6.75=x-170
x=176.75
(163.25, 176.75)