Answer:
When beginning to explore the world of electricity and electronics, it is vital to start by understanding the basics of voltage, current, and resistance.
Step-by-step explanation:
These are the three basic building blocks required to manipulate and utilize electricity. At first, these concepts can be difficult to understand because we cannot \"see\" them. One cannot see with the naked eye the energy flowing through a wire or the voltage of a battery sitting on a table.
24 × 0.12 = 2.88
24 - 2.88 = 21.12
so the percent of decrease is 12%
a. 12.0%
The answer is 66% because you divide 5.28 divided by 8
Answer:
0.5161
Step-by-step explanation:
There is a lot of unnecessary information in this question. We only need info for Smartphone A users since our sample size consists of entirely Smartphone A users, and it's asking about them. So ignore any info that isn't about Smartphone A users.
We have (for Smartphone A users):
x = 15, s = 6.4, n = 16
We want: P(14.5 < x < 17)
We need to find the z-scores for the values of 14.5 and 17 using the data for smartphone a users.
See attached photo for the calculation of the 2 z-scores and the probabilities