Question

There are two multiple choice questions on a quiz, one with four answer choices and one with six answer choices. Suppose the probability of a student answering the questions correctly is 3/12. Are the events independent? Use the probability of crazy event to support the answer.

107

likes
535 views

Answer to a math question There are two multiple choice questions on a quiz, one with four answer choices and one with six answer choices. Suppose the probability of a student answering the questions correctly is 3/12. Are the events independent? Use the probability of crazy event to support the answer.

Expert avatar
Madelyn
4.7
86 Answers
Let's denote the event of a student answering the first question correctly as A and the event of a student answering the second question correctly as B.

The probability of a student answering each question correctly is P(A) = P(B) = 3/12 = 1/4.

If events A and B are independent, then the joint probability of both events occurring is equal to the product of their individual probabilities:
P(A and B) = P(A) * P(B)

Since the events A and B are independent, the joint probability of the student answering both questions correctly is:
P(A and B) = (1/4) * (1/4) = 1/16

However, the probability of a student answering the questions correctly is given as 3/12, which is greater than 1/16. This violation of the multiplication rule for independent events implies that the events A and B are not independent.

Therefore, the events of a student answering two multiple-choice questions correctly are not independent.

\textbf{Answer:} The events of a student answering the two multiple-choice questions correctly are not independent.

Frequently asked questions (FAQs)
Question: How many scalene triangles can be formed using sides measuring 8 cm, 13 cm, and a positive integer length less than 20 cm?
+
What is the standard deviation of a data set: 8, 12, 16, 20, 24, 28, 32, 36?
+
How many kilometers are equivalent to 75 miles?
+
New questions in Mathematics
A=m/2-t isolate t
Find the measures of the sides of ∆KPL and classify each triangle by its sides k (-2,-6), p (-4,0), l (3,-1)
4X^2 25
4x-3y=5;x+2y=4
If f(x,y)=6xy^2+3y^3 find (∫3,-2) f(x,y)dx.
The equation of the straight line that passes through the coordinate point (2,5) and is parallel to the straight line with equation x 2y 9 = 0 is
find x in the equation 2x-4=6
Find all real numbers x that satisfy the equation \sqrt{x^2-2}=\sqrt{3-x}
determine the polynomial F of degree 2 that interpolates. f at points (0;1) (2;5) (4;6). calculate F(0.8). Note: Using the polynomial expression with difference operator.
show step by step simplification: (¬𝑑∨((¬b∧c)∨(b∧¬c)))∧((𝑎 ∧ 𝑏) ∨ (¬𝑎 ∧ ¬𝑏))∧(¬𝑐∨((¬𝑑∧𝑎)∨(𝑑∧¬𝑎)))
Solve the following equation for x in exact form and then find the value to the nearest hundredths (make sure to show your work): 5e3x – 3 = 25
The function h(t)=-5t^2+20t+60 models the height in meters of a ball t seconds after it’s thrown . Which describe the intercepts and vertex of this function
Determine the increase of the function y=4x−5 when the argument changes from x1=2 to x2=3
If the regression equation is given by 4x –y + 5 = 0, then the slope of regression line of y on x is
A popular cell phone family plan provides 1500 minutes. It charges 89.99/month for the first 2 lines and 9.99 for every line after that. Unlimited text messages for all phone lines costs $30.00/month, and Internet costs $10.00/month per phone line. If a family with a $200 monthly budget buys this plan and signs up for unlimited text messaging and Internet on each phone line, how many cell phone lines can they afford? Use an inequality to solve this problem. Graph your solution on the number line and explain the meaning of your graph in a sentence.
Find the zero of the linear function 8x + 24 = 0
The mean of 4 numbers is 5 and the mean of 3 different numbers is 12. What is the mean of the 7 numbers together? Produce an algebraic solution. Guess and check is acceptable.
A rectangular swimming pool has a length of 14 feet, a width of 26 feet and a depth of 5 feet. Round answers to the nearest hundredth as needed. (a) How many cubic feet of water can the pool hold? cubic feet (b) The manufacturer suggests filling the pool to 95% capacity. How many cubic feet of water is this? cubic feet
97,210 ➗ 82 division
Find the number of liters of water needed to reduce 9 liters of lotion. shave containing 50% alcohol to a lotion containing 30% alcohol.