Answer:
If the lifetime of batteries in the packet is 40.83 hours or more then, it exceeds for 5% of all packages.
Step-by-step explanation:
We are given the following information in the question:
Mean, μ = 15
Standard Deviation, σ = 1
Sample size = 4
Total lifetime of 4 batteries = 40 hours
We are given that the distribution of lifetime is a bell shaped distribution that is a normal distribution.
Formula:

Standard error due to sampling:

We have to find the value of x such that the probability is 0.05
P(X > x) = 0.05
Calculation the value from standard normal z table, we have,
Hence, if the lifetime of batteries in the packet is 40.83 hours or more then, it exceeds for 5% of all packages.
Answer:5
Step-by-step explanation:
Answer:The answer is 0.1875, or 3/16 (in fraction form)
Step-by-step explanation: 3/4 divided by 4, (a square is equal on all 4 sides)
And there you have it!!!
<em>You're welcome :D</em>
Answer:

Step-by-step explanation:
Given:

Then the composition of functions:

where we have written the final functional expression in its standard form.
Answer:
32 005
Step-by-step explanation:
use this formula
Tn = a +(n-1)d