How can you determine if a relationship is a direct variation from an equation? A table? A graph?
1 answer:
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Answer:
a) z = -1.645
b) z = 0.674
Step-by-step explanation:
We have to find the value of z of a standard normal variable Z that satisfies each of the following conditions.
a) 5% of the observations fall below z
Calculation the value from standard normal z table, we have,
b) 25% of the observations fall above z
Calculation the value from standard normal z table, we have,