if there are 47 students and the failing rate is 15%, what is the probability of two students failing. Show steps
if there are 47 students and the failing rate is 15%, what is the probability of...
If the records show that the probability of failing this course is p=0.2, what is the probability that at most 2 students out of 15 fail this course? A-10 B-3 C-1 D-0 F-1 *Failing grades are D's and F's*
Assume an airplane has 4 engines each failing with probability of 0.0001. What is the probability that all 4 engines fail (none work)? A. 0.9999^4 B. 1 - 0.9999^4 C. 0.0001^4 D. 1
Assume an airplane has 4 engines each failing with probability of 0.0001. What is the probability that at least one engine fail? (Hint: Think about the complement event and its probability first) A. 0.9999^4 B. 1 - 0.9999^4 C. 0.0001^4 D. 1
The manufacturer of an electronic device claims that the probability of the device failing during the warranty period is 0.005. If 3000 of these devices are sold, the probability that at least 15 of them fail during the warranty period is closest to which of the following?
Question 1. A vaccine has a 13% probability of failing to prevent a certain disease. The probability of getting the disease if a person is not vaccinated is 30%. In a certain geographic region, 25% of the people get vaccinated. (4-2 187-31 6ed) a. Draw a tree diagram that represents the experiment above and show the probability in each of the branches and the probability of the final outcomes. b. If a person is selected at random in this region,...
in a classroom theres 15 boys and 25 girls. what is probability 3 students get chosen and are girls?
Twenty students are enrolled in a class. What is the probability that at least two students have the same birthday? Repeat the problem for a class size of seventy. Ignore leap years.
There are 20 students in a classroom. 12 of the students have black hair, 6 of the students have blonde hair, and 2 of the students have red hair. 2 of the students are chosen randomly. (i) (i) (iii) Calculate the probability that the two students chosen both have black hair. Calculate the probability that the two students chosen has different hair colors. Calculate the probability that the second student has a different hair color given that the first student...
Suppose that a certain college class contains 47 students of these, 28 are sophomores, 27 are business majors, and 8 are neither. A student is selected at random from the class. (a) What is the probability that the student is both a sophomore and a business major? (b) Given that the student selected is a business major, what is the probability that he is also a sophomore? Write your responses as fractions. (If necessary, consult a list of formulas.)
A mechanical part has a 0.7 chance of failing over the course of a year a) What is the probability that it will fail in year 5? b) What is the probability that the part lasts for more than two years?