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:
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:
