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.
A. Exactly one quadrilateral exists
With what? there’s no problem.
Answer:
36π cubic inches
Step-by-step explanation:
Volume of sphere:
V = 4/3 πr^3
Given: r = 3 in.
Plug in
V = 4/3 π (3^3)
V = 4/3 π (27)
V = 36 π
Answer
36π cubic inches