Consider a demand or load versus capacity or strength relation, z = r - s, where r denotes the capacity and s the demand. assume that capacity is described by a normal distribution with r  = 200, r = 40, and the demand is also described by a normal distribution with s = 100, s  = 30. a) what is the distribution of z? b) estimate the mean and standard deviation of z; c) calculate the reliability index  and probability of failure pf.

ian gone lie this got me confused

step-by-step explanation:

134.6 us dollars

step-by-step explanation:

1 us dollar = 1.33 canadian dollars

so, 150 us dollars = 150 × 1.33 = $199.5.

in canada, the money mitchell spent = 20 canadian dollars.

remaining canadian dollars with him = 199.5 - 20 = 179.5.

after mitchell returned to us, he exchanged the remaining canadian dollars to us dollars.

179.5 canadian dollars = 179.5 × 0.75 = 134.6 us dollars.

the answer is z7+8/5