B. How many different answers are possible in a true-false test consisting of 10 questions?

Question

13-05-2024
Mathematics

Answered

B. How many different answers are possible in a true-false test consisting of 10 questions?

Answer :

Other Questions

Direct mail advertisers send solicitations ("junk mail") to thousands of potential customers in the hope that some will buy the company's product. The respons

300 words essay english tle ict grade 7

Which of the following cellular changes is commonly associated with atrophy?A) Increase in cell size due to hypertrophyB) Accumulation of intracellular fatC) De

Explain why existing awareness programs against unhealthy lifestyle choices seem ineffective in instilling good decision-making skills for young people to chang

After a bill has been introduced, what happens next in the lawmaking process?A. It is debated on the floor.B. It is sent to the other house.C. It is reviewed in

In your own words, what is a factor market?

Exprese el número [tex]\frac{2^{-3}}{3^{-2}}[/tex] de la forma a / b con a y b enteros.Select one:a. [tex]\frac{9}{8}[/tex]b. [tex]\frac{-8}{-9}[/tex]c. [tex]\f

Evaluate the following expression:[tex]\[ \frac{3 \times 27^{n+1} + 9 \times 3^{3n-1}}{8 \times 3^{3n} - 5 \times 27^n} \][/tex]

The multiplicative inverse property is used in:Multiply [tex]\frac{6}{13}[/tex] by the reciprocal of [tex]\frac{-7}{16}[/tex]. The reciprocal of [tex]-\frac{7}{

Milia form a hard ball beneath the outer layer of the skin. Milia are pearly white cysts that contain what?A. Scar tissueB. Scaly skinC. SebumD. Sweat

GinnyAnswer GinnyAnswer · Answer 1 · 2024-05-13T02:39:33-04:00

Final answer:

The detailed answer explains how to calculate the probability of passing a true-false test with at least a 70% score by considering all possible outcomes and favorable combinations.

Explanation:

Probability Calculation:

To calculate the probability of passing with at least 70%, we need to consider the different possibilities. Out of the 10 questions, if the student randomly guesses, there are 2^10 = 1024 possible outcomes. To pass with at least 70%, the student needs to get 7, 8, 9, or 10 questions correct. The combinations for each are:

7 correct: 10C7 = 120
8 correct: 10C8 = 45
9 correct: 10C9 = 10
10 correct: 10C10 = 1

The total favorable outcomes are the sum of these combinations. Divide the total favorable outcomes by the total possible outcomes to get the probability of passing with at least 70%.

Learn more about Probability calculation here:

https://brainly.com/question/33594301