The video indicates which of the following is an acceptable ...

[ARLKQ]

The video indicates which of the following is an acceptable alternative to washing your hands for 20 seconds with respect to preventing illness?
 A. Washing your hands for 10 seconds with water that exceeds 100 degrees Fahrenheit.
  B. Getting a flu shot.
  C. Rinsing with mouthwash that has at least 15 alcohol.
  D. Using hand sanitizer with at least 60 alcohol.

Question 2

The video lists the major employers in Douglas County, but does not list any statistics with these names. Which of the following statistics would help you understand why they describe these companies as major employers in Douglas County.
 A. The number of employees of each of these companies.
  B. The number of employees who are Douglas County residents in each of these companies.
  C. The percentage of employees of each of these companies who live in Douglas County.
  D. The percentages of employed Douglas County residents who work for each of these companies.

[dpost18]

Answer to Question 1

D. Using hand sanitizer with at least 60 alcohol.

FEEDBACK:
This is directly from the video. It says if you don't have access to a sink, using hand sanitizer with at least 60 alcohol can also fight germs.

2.The video urges people to wash their hands to reduce the likelihood (that is, the probability) of contracting diseases. What does this imply?

A. If you wash your hands, you will not contract a disease. That is:
P(contracting a disease if you wash your hands) = 0
B. If you don't wash your hands, you will contract a disease. That is:
P(contracting a disease if you don't wash your hands) = 1
C. The probability of contracting a disease is lower if you wash your hands than if you don't wash your hands. That is:
P(disease if you wash your hands) D. If you contracted a disease, you must have not washed your hands. That is:
P(washed your hands if you contracted a disease) = 0

C.The probability of contracting a disease is lower if you wash your hands than if you don't wash your hands. That is:
P(disease if you wash your hands) < P(disease if you don't wash your hands)

FEEDBACK:
The video does not say that washing your hands prevents disease with certainty, nor does it say that if you fail to wash your hands, you will contract a disease with certainty. In probability, an event that is certain has a probability of 1, while an event that will not occur, with certainty, has a probability of 0.

This video was about reducing the likelihood of contracting diseases, so the implication is that if you wash your hands, your probability of contracting of disease is lower than if you did not wash your hands. This doesn't mean, however, that if you contracted a disease, you necessarily did not wash your hands.

Answer to Question 2

D. The percentages of employed Douglas County residents who work for each of these companies.

FEEDBACK:
Expressing why these employers are major employers in Douglas County is tricky, which is probably why they listed these company names without any numbers. If they listed the number of employees in each of these companies, this would not indicate whether these employees reside in Douglas County. If they listed the number of employees who are Douglas County residents in each of these companies, these numbers would be hard to interpret unless you know the number of residents or employed residents in Douglas County. If they listed the percentage of employees of each of these companies who live in Douglas County, these numbers would only be interpretable considering the size of the companies. Thus, the best statistics to understand why these companies are major employers in Douglas County is the percentages of employed Douglas County residents who work for each of these companies. For example, such a statistic might be 8 of Douglas County workers work for Company X.