1. A random sample of 1000 oranges showed that mean amount of juice per orange was 7 fluid ounces, with the standard deviation of 1.6 fluid ounces. If z-score for particular orange was -1.5, how much juice was produced by this orange? Round approximate values to nearest tenth of fluid ounce.
a) 5.5 fluid ounces
b) 8.5 fluid ounces
c) 4.6 fluid ounces
d) 9.4 fluid ounces
e) 7.1 fluid ounces
2. In certain normal distribution of scores, mean is 50 and standard deviation is 4. Find out the z-score corresponding to the score of 55.
a) 12.50
b) 13.75
c) -1.25
d) 1.25