Answer:
92.65 % light bulbs last less than 2080 hours
Step-by-step explanation:
We are given that The amount of time a certain brand of light bulb lasts is normally distributed
Mean =
Standard deviation =
We are supposed to find What percentage light bulbs last less than 2080 hours, to the nearest tenth
Z=1.45
Refer the z table for p value
p value = 0.9265
Hence 92.65 % light bulbs last less than 2080 hours
The transformed equation , the graph is shifted 4 units to the left and 6 units down.
Explanation:
The parent equation is
The transformed equation is
By using the function transformation rules, we can see that the parent function is transformed into the function
Since, from the function transformation rules, we know that,
shifts the function b units to the left.
Thus, the transformed function is shifted 4 units to the left.
Also, from the function transformation rules, we know that,
shifts the function b units downward.
Thus, the transformed function is shifted 6 units down.
Thus, the transformed equation , the graph is shifted 4 units to the left and 6 units down.