Of Ph.D. students, 60% have paid assistantships. If 3 students are selected at random, find the probability that at least 1 has a paid assistantship.

fifty five percent of US households say they would feel secure if they had $50000 in savings. You randomly select 8 household and I asked them if they would feel secure if they had $50,000 in savings. find the probability that the number that say they would feel secure is (a) exactly five, (b) more than five, and (c) at most five

Saved Listen             Question 1 options: Nova has a pop quiz with 9 multiple choice questions. Each question has 3 answer options. Assume that Nova randomly guesses on every question. Find the probability that Nova passes the test with a score of 70% or more. Round to the nearest tenth of a percent (1 decimal place percent).       Question 2    Saved Listen             Question 2 options: The chance of an email being spam is 44%. If you receive 33 emails in a single day, find the probability that exactly 14 of them are spam. Round to the nearest tenth of a percent (1 decimal place percent).       Question 3 The sensitivity of a medical test is the true positive rate. In other words, the sensitivity is the probability that a person with the condition is correctly identified as having it. The specificity of a test is the true negative rate. In other words, the specificity is the probability that a person without the…

In general after group makes a reservation in a restaurant they do not show up 20% of the time. If a restaurant has six reservations for the evening, what is the probability that exactly 2 do not show up?