Question

Condsider the given endothermic reactions. in the table 204 are summarized

Answer 1

Answer:

Step-by-step explanation:

Hello!

Using the information data of 204 endotermic reactions, two events were determined:

A: "the reactions final temperature is 271K or less"

B: "the heat absorbed is above target"

a) P(A∩B) is the intersection between the two events, this means, all the exotermic reaction with final temperature of 271K and less and absorved heat above target:

P(A∩B)= $\frac{16+40}{204}$= 0.274

b)P(A∪B) is the probability that the reactions had a final temperature of 271K or are above target, the events A and B are not mutually exclusive, since both can occur at the same time (their intersection isn't void), so you calculate the probability as:

P(A∪B)= P(A) + P(B) - P(A∩B)

To calculate the probability of event A, you have to divide the number of reactions whose final temperature or less by the total number of endotermic reactions, symbolically:

$P(A)= \frac{44+16+12+40}{204}= 0.549$

The probability of event B is the quotient between all reactions above target and the total of reactions, symbolically:

$P(B)= \frac{40+16+36}{204} = 0.451$

Then

P(A∪B)= 0.549 + 0.451 - 0.274= 0.726

c) P(A'∪B')

P(A'∪B')= P(A') + P(B') - P(A'∩B')

If A' is the complementary event of A, meaning all endotermic reactions above a final temperature of 271K, then it's probability is:

P(A')= 1 - P(A)= 1 - 0.549= 0.451

And B' the complementary event of B, this includes all reactions with heat absortion below target, it's probability is:

P(B')= 1 - P(B)= 1 - 0.451= 0.549

And the intersection between both events is:

P(A'∩B')= 56/204= 0.274

Then

P(A'∪B')=0.451 + 0.549 - 0.274= 0.726

d. P(A∪B')

P(A∪B')= P(A) + P(B') - P(A∩B')

P(A∩B') is the intersection of the events "final temperature 271 K or less" and "heat absorbed below target" There are two values that meet these characteristics so the intersection is:

P(A∩B')= $\frac{44+12}{204}= 0.274$

P(A∪B')= 0.549 + 0.549 - 0.274= 0.824

e. P(A'∩B')

P(A'∩B')= 56/204= 0.274

I hope you have a SUPER day!