Docsity
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Docsity AI
Docsity AI
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search for your university

Find the specific documents for your university's exams

Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

MAT/STA 325 Exam 1 - Statistics, Exams of Mathematics

State University of New York Polytechnic - Utica-RomeMathematics

The february 15, 2001 exam for mat/sta 325 statistics course. The exam includes questions on calculating means and standard deviations, probability theory, and independent events. Students are required to solve problems related to data analysis, foul shots, and purchasing defective items.

Typology: Exams

Pre 2010

Uploaded on 08/09/2009

koofers-user-4fu
koofers-user-4fu 🇺🇸

10 documents

1 / 5

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
MAT/STA 325 Exam 1 February 15, 2001
Prof. Thistleton
1. You are given the data shown on the accompanying graph.
(a) Calculate the mean of the data set.
(b) Calculate the standard deviation of the data set.
(c) Express the data point 4 in standard units.
Suppose you have a distribution with mean µ= 20 and standard deviation σ=5. Whatcan
you say about the proportion of data
(a) between 5 and 35?
(b) above 40?
01234567
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
class frequencies
class marks
1
pf3
pf4
pf5

Partial preview of the text

Download MAT/STA 325 Exam 1 - Statistics and more Exams Mathematics in PDF only on Docsity!

MAT/STA 325 Exam 1 February 15, 2001 Prof. Thistleton

  1. You are given the data shown on the accompanying graph.

(a) Calculate the mean of the data set.

(b) Calculate the standard deviation of the data set.

(c) Express the data point 4 in standard units.

Suppose you have a distribution with mean μ = 20 and standard deviation σ = 5. What can you say about the proportion of data

(a) between 5 and 35?

(b) above 40?

(^00 1 2 3 4 5 6 )

1

2

3

4

5

class frequencies

class marks

  1. After extensive analysis you have determined that, when you attempt two consecutive foul shots, the probability that you are successful on the first is 0.7 and the probability that you are successful on the second is 0.75. Also, the probability that you are successful on the second given that you miss the first is 0.35.

FIRST SECOND

I

II III IV

(a) State in words what each of the regions I, II, III, and IV represents.

(b) Calculate the probability of each of the regions I, II, III, and IV.

(c) What is the probability that you are successful on the second shot given that you are successful on the first shot?

  1. Suppose that 10% of items from a manufacturer are defective in some way. Suppose also that these items are defective independently of one another. You purchase 4 items.

(a) What is the probability of that you will obtain 0 defectives?

(b) What is the probability of that you will obtain 1 defectives?

(c) What is the probability of that you will obtain 2 defectives?

(d) What is the probability of that you will obtain 3 defectives?

(e) What is the probability of that you will obtain 4 defectives?

  1. A deck of cards has 52 cards, of which 13 are labeled Hearts, 13 are labeled Clubs, 13 are labeled Spades, and 13 are labeled Diamonds. You deal yourself 5 cards. Calculate the probability that you deal yourself

(a) 0 Hearts.

(b) 1 Heart.

(c) 2 Hearts.

(d) 3 Hearts.

(e) More that 3 Hearts.

(f) You will buy 4 lottery tickets. Each ticket is either a Win or a Loss. Draw a tree diagram showing all possible outcomes of this experiment.