Answer:
The expected number of people identified as telepathic if everyone is just guessing in a sample of 500 = 100 (option B)
Step-by-step explanation:
If everyone is just guessing, the number of right answers will be due to random chance. And if that is so, the central limit theorem explains that the sample proportion of a random, independent sample is approximately equal to the population proportion or the overall proportion due to random chance.
That is,
p = p₀ = 0.20
Expexted number of successes from a sample = Mean = μ = np
where n = sample size = 500
p = sample proportion = 0.20
Mean = 500 × 0.20 = 100
Hope this Helps!!!
The solution to this systems of linear equations is (0,2). The two lines that are graphed for you intersect at a point. That is the solution. When you are looking to find a coordinate pair given a point, remember that you have to crawl before you walk. Start at the origin. Look to the left or right. If there is not point there, then your x coordinate is zero. Then, look up or down. In this case, the y coordinate is two because you have to go up two units on the y axis to get to the point.
Pemdas, ok first 17 plus 8 is 15, 6 times 2 is 12 , so 15 minus 12 is 3. answer is 3
All you need to know is that if the lines are the same and is not touching or intersecting then they are parallel. Parallel lines never intersect, those will be perpendicular lines.