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,

Answer:
Step-by-step explanation:
620.50 * 12 = 7,446
597.20 * 12 = 7,116.4
7446 - 7116.4 = 329.6
Answer:
New point is ( - 6, 3).
Step-by-step explanation:
x= -3, after translation 3 units left, we get X = - 3 - 3 = - 6
y = -1, after translation 4 units up, we get X = -1 + 4 = 3
New point is ( - 6, 3).