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Mathematics

2 answers:

jolli1 [7]2 years ago

4 0

part a: –2°F > –6°F

part b: the inequality is representing the temperatures of city R and city S, comparing the difference in their temperatures.

part c: (marking city R at –2 on the number line and marking city S at –6 on the number line), using the number line to show the values of the city temperatures, city R is warmer because it is closer to 0 while city S is farther from zero and in the case that these are negative temperatures, the temperature closest to zero is the warmest.

Gre4nikov [31]2 years ago

3 0

Part A -2 > -6

Part B- this is an inequality because it is comparing the temperature difference. -2 is greater than -6 because it is a warmer temperature. The higher the negative number the colder it is, the lower the negative number is or the closer

Part C- City R is warmer because it is -2 degrees F and the other city is -6F. The closer you get to zero when working with negative numbers the bigger the number is. This is because number lines read from left to right, just like a book. -2 is warmer than -6 because it is closer to zero and it is closer to become a positive number than -6 is.

Hope this helps!

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A health statistics agency in a certain country tracks the number of adults who have health insurance. Suppose according to the

Nana76 [90]

Answer:

a) There is a 15.3% probability that a randomly selected person in this country is 65 or older.

b) Given that a person in this country is uninsured, there is a 2.2% probability that the person is 65 or older.

Step-by-step explanation:

We have these following percentages:

5.3% of those under the age of 18, 12.6% of those ages 18–64, and 1.3% of those 65 and older do not have health insurance.

22.6% of people in the county are under age 18, and 62.1% are ages 18–64.

(a) What is the probability that a randomly selected person in this country is 65 or older?

22.6% are under 18

62.10% are 18-64

The rest are above 65

100% - (22.6% + 62.10%) = 15.3%

There is a 15.3% probability that a randomly selected person in this country is 65 or older.

b) Given that a person in this country is uninsured, what is the probability that the person is 65 or older?

This can be formulated as the following problem:

What is the probability of B happening, knowing that A has happened.

It can be calculated by the following formula

$P = \frac{P(B).P(A/B)}{P(A)}$

Where P(B) is the probability of B happening, P(A/B) is the probability of A happening knowing that B happened and P(A) is the probability of A happening.

So, what is the probability that a person is 65 and older, given that the person is uninsured.

P(B) is the probability that a person is 65 and older. From a), we have that $P(B) = 0.153$