In a certain population, 18% of the people have Rh-negative blood. A blood bank serving this population receives 98 blood donors on a particular day. (Use the normal approximation. Round your answers to four decimal places.) A USE SALT (a) What is the probability that 10 or fewer are Rh-negative? (b) What is the probability that 15 to 20 (inclusive) of the donors are Rh-negative? (c) What is the probability that more than 80 of the donors are Rh-positive?

can you answer part a, b, c since they are all one question

If radio station call letters must begin with either K or W and must include either two or three additional letters, how many different possibilities are there? There are different possibilities. (Simplify your answer.) ater

Part 4: Suppose that 53 of the 55 Computer Science students of San Sebastian College, Manila are taking at least one of the mathematics subjects Algebra, Trigonometry and Calculus. See the figure below for more details: 24 taking Algebra, 26 taking Trigonometry, 20 taking Calculus, 5 taking Algebra and Trigonometry, 7 taking Algebra and Calculus, 8 taking Trigonometry and Calculus. a. Find the number of students who are taking all three mäthematics subjects. b. Fill in the correct number of students in each of the eight regions of the Venn diagram. c. Determine the number of students who are not taking any of the three mathematics subjects? d. How many students are taking Algebra as their only mathematics subject? e. How many students were taking Calculus and Trigonometry but not Algebra?

Twelve classmates are taking a picture side by side.  A. In how many ways can they take the picture if there are not restrictions? B.  In how many ways can they take the picture if two best friends must stand side by side?  C. Using the results from A and B, in how many ways can the best friends not stand side by side?

There is no answer for part b nor part c? Is there a reason why? Can you answer part b or c

For the three-part question that follows, provide your answer to each part in the given workspace. Identify each part with a coordinating response. Be sure to clearly label each part of your response as Part A, Part B, and Part C. View the rubric linked above for help if needed. For Part A, Part B, and Part C, use the scenario below. Show all work. Cards are drawn from a standard 52-card deck without replacement. Part A: Two cards are drawn. What is the probability that the first card is a five and the second card is a six? Part B: Two cards are drawn. What is the probability that both cards are fives? Is the probability that both cards are fives greater or less than the probability that a five and six are drawn? Explain. Part C: Three cards are drawn. What is the probability that exactly two cards are fives?