Answer:
To start this question we multiply both sides of (n + 5)/-16 = -1 by -16. We get
n+5=16, because of this. Now we can solve for n by subtracting 5 on both sides. We get n=11 so the answer is your first choice or 11.
<h3>Answer: Statistic</h3>
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Explanation:
The fact that we have the phrasing "randomly-selected" in there is a big clue that we are working with a sample, and not a population. If 40 people represented the population, then we wouldn't be randomly selecting anyone. Everyone would be surveyed. No random process needed. We don't need to worry about the order of those surveyed.
However, we are applying a random selection process to form this sample. A <u>statistic</u> is some value that measures a sample. For instance, xbar is the sample mean which is a sample statistic. The xbar value estimates mu, which is a greek letter. Mu is the population mean and a population parameter.
To remember the difference between the two terms parameter and statistic, one useful memory trick is to think of it like this:
- <u>Statistic</u> and sample both start with s
- Population and parameter both start with p
As the name "statistics" implies, it is the study of how to estimate a population based on a sample. After gathering the sample, we compute a statistic, which in turn estimates a parameter. So that explains why your math course and textbook has that label.
Answer:
24 times
Step-by-step explanation:
75% = 0.75, so then you just do 0.75 * 32 = 24
Answer:
Assume that Sn is valid for n = k and prove that Sn is valid for n = k + 1.
Step-by-step explanation:
This is the second step in the principal of mathematical induction. The three steps in the principals of mathematical induction are:
1. show that something works for the first case (base or anchor step)
2. assume that it works for any particular step (inductive hypothesis), and then
3. show that it works for the next case (inductive step)
p. 621 in textbook
It's weird that they put steps 2 & 3 together, but it was correct on the test so ¯\_(ツ)_/¯