Answer: Option 'd' is correct.
Step-by-step explanation:
Since we have given that
Margin of error = 0.5 years
Standard deviation = 5
At 90% confidence, z = 1.645
We need to find the minimum size of the sample they must take.
So,
Hence, Option 'd' is correct.
Answer:
V =
Step-by-step explanation:
Given
B = ( multiply both sides by h )
Bh = 3V ( isolate V by dividing both sides by 3 )
= V
Answer:
t = 1.277 sec and t = 2.848 sec
Step-by-step explanation:
This problem is much more easily done by graphing it than by computing it using algebra.
The values of t we're looking for are the ones that make x = 0, so we want the solutions of on the interval [0, 3].
According to the graph, this is true when t = 1.277 seconds and t = 2.848 seconds.
