Stats#4.1-4.2

.docx
School
Phoenix College **We aren't endorsed by this school
Course
MAT 142
Subject
Statistics
Date
Sep 2, 2023
Pages
2
Uploaded by CaptainEnergy903 on coursehero.com
Statistics - Villagomez Name: Chapter 4 Probability Period: Assignment: STATS#4.1-4.2 Show all Work!! 1. Blood types vary All human blood can be typed as one of O, A, B, or AB, but the distribution of the types varies with race. Here is the distribution of blood types of black Americans. Suppose we choose one black American at random. Blood type O A B AB Probability 0.49 0.27 0.20 ? a. What is the probability that the chosen person has type AB blood? Show work? P(AB) = b. Find the probability that the chosen person does not have type AB blood. Show work. P(not AB) = Rolanda has type B blood. She can safely receive blood transfusions from people with blood types O and B. c. Find the probability that a randomly chosen black American can donate blood to Rolanda. Show work. P(Donate O or B) = d. Find the probability that a randomly chosen black American cannot donate blood to Rolanda. Show work P(not donate O or B) = e. If you choose one black American at random, find the probability of: P(type A) = f. Is being Type O and Type AB mutually exclusive? Explain. 2. Who's paying? Ari, Betty, Charlie, Daniela, and Ethel go to the bagel shop for lunch every Thursday. Each time, they randomly pick 2 of the group to pay for lunch by drawing names from a hat. a) Give a probability model for this chance process. b) Find the probability that Charlie or Daniela (or both) ends up paying for lunch.
3. What day were you born? The frequency table summarizes the distribution of day of the week for all babies born in a single week in the United States Day Births Sunday 7374 Monday 11704 Tuesday 13169 Wednesday 13038 Thursday 13013 Friday 12664 Saturday 8459 a) Make a relative frequency bar chart of the distribution. b) Make a pie chart of the distribution.
Page1of 2
Uploaded by CaptainEnergy903 on coursehero.com