Stefanie Dziesinski
Joey Galus
Stephanie Buhaj
The following information is regarding to data consisting of a five year
performance and of that the first year mathematics courses that students took. The
number of cases collected is 4,998 and from that pop
BUS 300 Problem Set 1. Due Date: End of Class on Wednesday 4 th
February 2015
Instructions:
Answer all questions. The number of marks in given in [].Clearly show
your working to obtain all marks, as we did in class examples. For
multiple choice questions
Page 1 of 5
Department of Mathematics
STA 382QR
Homework Assignments (to be graded)
Fall 2016
Homework Assignment #1
Due Date: September 22, 2016
[Chapters 1 & 2]
1.
(a)
(b)
(c)
(d)
(e)
(f)
2.
(a)
(b)
(c)
(d)
In a two-week study of the productivity of wor
Page 1 of 5
Central Michigan University
Department of Mathematics
STA 382QR
1.
(a)
(b)
(c)
(d)
(e)
(f)
2.
(a)
(b)
(c)
3.
(a)
(b)
(c)
4.
Fall 2016
The following are the grades which 30 students obtained in a Calculus test:
75 77 83 88 74 94 85 75 91 87 76
Page 1 of 3
STA 382QR
Department of Mathematics
Examples from Chapter 4
Fall 2016
[Questions 1 to 9 are on Counting Rules]
1.
2.
3.
4.
(a)
(b)
5.
6.
(a)
(b)
7.
(a)
(b)
(c)
8.
(a)
(b)
9.
(a)
(b)
A student owns 5 shirts, 4 ties, and 3 pants. If he is to ran
Department of Mathematics
Key to Chapters 6 & 7 Examples
STA 382QR
Fall 2016
1. X is normal with = 8 and = 0.8 (You need to use the same unit for both and ).
8
(a) P( X 7.6)
= P ( X 7.60.8=
) P( Z 0.5) = 0.6915
(b) P( X 8.2) = P( X 8.20.88 ) = P( Z 0.25)
Page 1 of 2
Department of Mathematics
Examples from Chapter 4 [KEY]
STA 382QR
1.
2.
5*4*3 = 60
10
6
3.
10
4.
(a) 7*6*5*4 = 840
5.
P(at least 2 are born on the same day) = 1
6.
7.
8.
9.
Fall 2016
P9
(b) 3/7
365(364)(363)(362)(361)(360)
3656
6
6 4
(b) i
STA 382QR
Department of Mathematics
Examples from Chapters 1 & 2
Fall 2016
1. Performance of make-to-order processes may be measured by delivery time- the time from
receipt of an order until the product is delivered to the customer. The following data set
Page 1 of 2
Department of Mathematics
Examples from Chapters 1 & 2 [KEY]
STA 382QR
Fall 2016
1. Class width = 10
(a, b)
(c)
Class
1
2
3
4
5
Relative frequency Histogram
f
2
5
7
4
2
Boundaries
29.5 39.5
39.5 49.5
49.5 59.5
59.5 69.5
69.5 79.5
f/n
0.10
0.25
STA 382QR
Department of Mathematics
Examples from Chapter 5 (KEY)
Fall 2016
Binomial and Hypergeometric Distributions:
1. Suppose 70% of students in a class own cell phones. In a random sample of 5 students from
the class, let X denote the number that own
STA 382QR
Department of Mathematics
Examples from Chapter 5
Fall 2016
Binomial and Hypergeometric Distributions:
1. Suppose 70% of students in a class own cell phones. In a random sample of 5 students from
the class, let X denote the number that own cell
INTRO:
Hello everyone. My name is Ran. Today, I am very glad to share my idea to help you earn
money. I know you are my investor, so you just want to earn money. I spend two days to
think up a good idea. Last year, I arrived America, and I believe this is
September 10, 2007 STA 282
INSTRUCTOR: WILLIAM M BRIGGS
1. Week 1 1.1. Logic. We start with logic, and thinking straight. Here is a classical logical argument, slightly reworked: All statistics classes are boring. STA 282 is a statistics class.
The