Answer:
(a) The area to the left of Z = 1.02 is 0.8461
(b) The area to the left of Z = -0.72 is 0.2358
(c) The area to the left of Z = 1.33 is 0.9082
(d) The area to the left of Z = 0.95 is 0.8289
Step-by-step explanation:
The z score is a measurement used in statistics to determine the relationship between a value and the mean (average) of a group of values, measured from the standard deviations.
The z score table shows the area in percentage to the left of a given z score in a normal distribution.
From the z score table of the normal distribution:
(a) The area to the left of Z = 1.02 is 0.8461 = 84.61%
(b) The area to the left of Z = -0.72 is 0.2358 = 23.58%
(c) The area to the left of Z = 1.33 is 0.9082 = 90.82%
(d) The area to the left of Z = 0.95 is 0.8289 = 82.89%
