Module 3 Problem Sets 1-3 Answers.

Stati sti cs - Portage Online Summer 2018



Module 3 Problem Set 1-3 Answers

Problem Set 3.1 Solutions


1. Solution




We can see from the probability distribution, that if a hurricane hits the U.S. coast,
there is a .403 probability that it is a category 1 hurricane.


2. Solution.


This problem and the next, illustrate the relationship between percentage and
probability. Since 54% of the students are female, if you choose a student at random,
from the school, you will have a .54 probability of choosing a female. Since 46% of the
students are male, if you choose a student at random, from the school, you will have a
.46 probability of choosing a male.


3. Solution.


Since 20 % of the jelly beans are black, there will be a .20 probability of choosing a
black jelly bean. Since 19 % of the jelly beans are yellow, there will be a .19 probability
of choosing a yellow jelly bean.




4. Solution.


a) For permutations, we will use:

, Stati sti cs - Portage Online Summer 2018




b) For combinations, we will use:




5. Solution.




a) For permutations, we will use: