1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
just olya [345]
3 years ago
9

All the fourth-graders in a certain elementary school took a standardized test. A total of 81% of the students were found to be

proficient in reading, 74% were found to be proficient in mathematics, and 64% were found to be proficient in both reading and mathematics. A student is chosen at random.(a) What is the probability that student is proficient in mathematics but not in reading?(b) What is the probability that student is proficient in reading but not in mathematics?
Mathematics
1 answer:
Dvinal [7]3 years ago
5 0

Answer:

The probability that a student is proficient in mathematics, but not in reading is, 0.10.

The probability that a student is proficient in reading, but not in mathematics is, 0.17

Step-by-step explanation:

Let's define the events:

L: The student is proficient in reading

M: The student is proficient in math

The probabilities are given by:

P (L) = 0.81\\P (M) = 0.74\\P (L\bigcap M) = 0.64

P (M\bigcap L^c) = P (M) - P (M\bigcap L) = 0.74 - 0.64 = 0.1\\P (M^c\bigcap L) = P (L) - P (M\bigcap L) = 0.81 - 0.64 = 0.17

The probability that a student is proficient in mathematics, but not in reading is, 0.10.

The probability that a student is proficient in reading, but not in mathematics is, 0.17

You might be interested in
Gavin works for a skydiving company.
viktelen [127]
What’s the question ? & need additional information
4 0
2 years ago
PLEASE HELP FAST 2 EASY QUESTIONS FOR DOUBLE THE POINTS AND BRAINLIST MAKE SURE YOU READ IT CORRECTLY!
juin [17]

Answer:

2057

2 2

Step-by-step explanation:

7 0
3 years ago
1. London Heathrow airport sees on average 191,200 passengers a day. How many passengers is this per minute?
sladkih [1.3K]
191200 / 24 hours in a day = 7966.67 people per hour

60 minutes in 1 hour

7966.67 / 60 = 132.78 people per minute  round to 133 people
4 0
2 years ago
Express x cm in metres​
Viktor [21]

Answer:

0.0X m

Step-by-step explanation:

100 cm = 1 m

According to the question, we have

\frac{x}{100} = 1 m

0.0X = 1 m

4 0
2 years ago
On a river you must release any fish that you catch ifvit measures less than 12 inches. Define a variable and then write an alge
malfutka [58]

Let f = fish

If f < 12, let the fish go.

We cannot catch a fish measuring 11.99 inches.

If f = fish, then f < 11.99. It must be released.

6 0
2 years ago
Other questions:
  • Coach Henderson had 16 gallons of paint to use an equal amount of paint each five days how many gallons do you use in each day
    11·1 answer
  • What is the value of the digit 2 in the number 9,642
    6·2 answers
  • 3:008 3.825 3.09 3.18 greatest to least
    9·2 answers
  • Please help me i beg of u due today
    6·2 answers
  • The figure shows the scale drawing of a swimming pool.
    10·1 answer
  • Please help me, I need a math expert
    10·1 answer
  • The coordinates of a given point are (m, 2n). What are the coordinates of the point when it is translated 2 units to the right?
    9·1 answer
  • The diagram shows a right triangle and three squares. The area of the largest square is 55 unit^2
    14·2 answers
  • What do I do to answer
    14·1 answer
  • ¿Cuál es la diferencia entre
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!