All categories

3 years ago

Which of the following events are disjoint?

Mathematics

1 answer:

Art [367]3 years ago

3 0

Answer:

Step-by-step explanation:

We have to find out which two events are disjoint.

Two events are disjoint if both cannot happen simultaneously or Probability of both occurring is strictly 0.

a) Choose a student at random from a statistics class. Event A is that the student is a junior. Event B is that the student is a senior.

These are disjoint because a student cannot be a senior and junior both.

b) Choose a student at random from a statistics class. Event A is that the student is a psychology major. Event B is that the student is a statistics major.

Disjoint because same student cannot have psychology as well as statistics as major

c. Choose a student at random from a statistics class. Event A is that the student is at least 5'8" tall. Event B is that the student weighs at least 160 pounds.

These cannot be disjoint because there are chances for some students to be taller than 5 feet 8 inches and also having weight more than 160 lbs.

You might be interested in

Please need help thank you

valentinak56 [21]

Might be 1? Because it is 100 each

5 0

3 years ago

SHOW YOUR WORK AS MUCH AS POSSIBLE 60 POINTS

ale4655 [162]

Answer:

see below

Step-by-step explanation:

The expression for the account is

a) 3600 -400M where m is the number of months

b) We want the expression to equal 2000

3600 -400M = 2000

c) 3600 is the initial amount in the account

400 is the amount that the account goes down each month

M is the number of months

2000 is the amount left in the account

5 0

3 years ago

In a class of 25 students, 15 of them have a cat, 16 of them have a dog and 3 of them have neither.

den301095 [7]

Answer

the probility is 9

Step-by-step explanation:

5 0

4 years ago

(include your answers for Part 1 and Part 2 in the space below):

hjlf

9514 1404 393

Answer:

-3
left

Step-by-step explanation:

Part 1:

A ÷ E = (-3/2) ÷ (1/2) = -3/1 = -3 . . . value of A÷E

Part 2:

Point A is located at -1 1/2 on the number line. The point A÷E is located at -3 on the number line. Larger magnitude negative numbers are to the left, so ...

A÷E is left of A

5 0

3 years ago

Benny the Barber (see Question 1) is considering the addition of a second chair. Customers would be selected for a haircut on a

Artyom0805 [142]

According to the information presented, Benny should decide not to add a second chair because the average number of clients waiting is 1 (very low), the average waiting time for a client is 10 minutes (very low), and the average time a customer is in the store is 20 minutes (very low).

According to the information, an average of 2 clients arrive at the hairdresser for every hour (60 min) and each cut takes a maximum of 20 minutes. Therefore, the hairdresser would have an average of 40 minutes busy and 20 minutes free for each hour.

Additionally, customers who must wait do not have to spend a long time waiting in the store because the maximum waiting time is 10 minutes (in the case that both customers arrive at the same time).

Below is a graph where the information of both cases is compared (with an additional chair and without an additional chair) and it is inferred that an additional chair is not necessary because the number of clients waiting and the waiting time is not high.

Learn more in: brainly.com/question/25400126

3 0

3 years ago