Question

question 8 (3 points)
innumeracy is the lack of ability to understand and use numbers in calculations. what are some examples of the consequences of innumeracy?
you shop online for a new outfit to wear for pictures. store a has the outfit you want and the cost is $50 for the outfit plus $10 for shipping. store b has the same outfit for $55 and has free shipping. you decide to go with store b to save money.
you have a recipe that is supposed to feed 10 people. there will be 5 people including you at your dinner party. in order to make enough food and not have left - overs, you will need to take each measurement on the ingredient list and divide by 2 in order to have enough for 5 people.
a local law enforcement agency is trying to figure out why crime went up 50% in the last month. a local ice cream shop noticed that their ice cream sales also went up by 50% last month. this connection led to the conclusion that ice cream sales and crime are closely correlated and must mean that the rise in one causes a rise in the other.
a student is comparing the following fractions: $\frac{12}{33}$ and $\frac{5}{7}$
the student says that the first fraction is larger because 12 and 33 are larger than 5 and 7.
question 9 (3 points)
what is the length of the green rectangle measured to within 0.1 of the unit used? this ruler is used to measure in inches.
0.75 in ≤ length ≤ 0.95 in
0.65 in ≤ length ≤ 0.95 in
0.65 in ≤ length ≤ 0.75 in
0.85 in ≤ length ≤ 0.95 in

Explanation:

Question 8

1. Buying from Store B is a correct financial - decision, not an example of innumeracy.
2. Adjusting a recipe proportionally is correct math usage, not innumeracy.
3. Assuming causation from correlation due to similar percentage increases shows lack of understanding of statistics, an example of innumeracy.
4. Comparing fractions based on numerators and denominators without proper method shows lack of fraction - understanding, an example of innumeracy.

Looking at the ruler, the left - hand end of the green rectangle is at approximately 0 and the right - hand end is between 0.8 and 0.9. So the length is in the range $0.85\leq\text{length}\leq0.95$ inches considering the measurement accuracy of 0.1 of the unit used.

Answer:

• Third option: A local law enforcement agency is trying to figure out why crime went up 50% in the last month. A local ice cream shop noticed that their ice cream sales also went up by 50% last month. This connection led to the conclusion that ice cream sales and crime are closely correlated and must mean that the rise in one causes a rise in the other.
• Fourth option: A student is comparing the following fractions: $\frac{12}{33}$ and $\frac{5}{7}$. The student says that the first fraction is larger because 12 and 33 are larger than 5 and 7.

Question 9