Use standard normal table (z score).Determine the area under the standard normal curve that lies to the left of -1.20(z value).(answer up to four digit of fraction score)
Question
Use standard normal table (z score).Determine the area under the standard normal curve that lies to the left of -1.20(z value).(answer up to four digit of fraction score)
Solution
To find the area under the standard normal curve that lies to the left of -1.20, you would use a standard normal (Z) table.
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First, find the row that corresponds to the first two digits of your Z score (-1.2) on the left side of the table.
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Then, find the column that corresponds to the second decimal place of your Z score (0.00) at the top of the table.
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The intersection of this row and column will give you the area to the left of the Z score.
For a Z score of -1.20, the area to the left is 0.1151 (or 11.51% when expressed as a percentage). This means that 11.51% of the data falls to the left of -1.20 under the standard normal curve.
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