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10 MCQs on Introduction to Statistics with Answer Key | MATH 1040, Exams of Mathematics

Salt Lake Community CollegeMathematics

Material Type: Exam; Class: Intro to Statistics (QL); Subject: Mathematics; University: Salt Lake Community College; Term: Fall 2007;

Typology: Exams

Pre 2010

Uploaded on 08/16/2009

koofers-user-sb2
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Math1040FinalExamFormA-FallSemester2007
Name:__________________________________Date:________________
Thisexamhastwoparts PartI-Tenmultiplechoicequestions
PartII-ChooseTENoutoffifteenopenendedquestions-youMUST
showyourworkandindicatewhichtenproblemsaretobegraded.
Studentsareallowedtousecalculatorsandtheformulacardfromthetextbook
INSTRUCTIONSPARTI:Questions1-10,Multiplechoice.AnswerallTENquestionsandcircle
thecorrectanswer.
Determinewhetherthegivenvalueisastatisticoraparameter.
1) Ahealthandfitnessclubsurveys40randomlyselectedmembersandfoundthatthe
averageweightofthosequestionedis157lb.
A) Parameter B) Statistic
Solvetheproblem.
2) Abankʹsloanofficerratesapplicantsforcredit.Theratingsarenormallydistributedwith
ameanof200andastandarddeviationof50.Findtheratingthatcorrespondstothe60th
percentile.
A) 207.8 B) 187.5 C) 211.3 D) 212.5
Findthevalueofthelinearcorrelationcoefficientr.
3) Thepaireddatabelowconsistsofthetestscoresof6randomlyselectedstudentsandthe
numberofhourstheystudiedforthetest.
Hours 510 4610 9
Score 64 86 69 86 59 87
A) 0.678 B) -0.678 C) -0.224 D) 0.224
Identifywhichofthesetypesofsamplingisused:random,stratified,systematic,cluster,
convenience.
4) Ataxauditorselectsevery1000thincometaxreturnthatisreceived.
A) Convenience
B) Stratified
C) Systematic
D) Random
E) Cluster
pf3
pf4

Partial preview of the text

Download 10 MCQs on Introduction to Statistics with Answer Key | MATH 1040 and more Exams Mathematics in PDF only on Docsity!

Math 1040 Final Exam Form A - Fall Semester 2007

Name: __________________________________ Date: ________________

This exam has two parts Part I - Ten multiple choice questions Part II - Choose TEN out of fifteen open ended questions - you MUST show your work and indicate which ten problems are to be graded.

Students are allowed to use calculators and the formula card from the text book

INSTRUCTIONS PART I : Questions 1 - 10, Multiple choice. Answer all TEN questions and circle the correct answer.

Determine whether the given value is a statistic or a parameter.

  1. A health and fitness club surveys 40 randomly selected members and found that the average weight of those questioned is 157 lb. A) Parameter B) Statistic

Solve the problem.

  1. A bankʹs loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. Find the rating that corresponds to the 60th percentile. A) 207.8 B) 187.5 C) 211.3 D) 212.

Find the value of the linear correlation coefficient r.

  1. The paired data below consists of the test scores of 6 randomly selected students and the number of hours they studied for the test. Hours 5 10 4 6 10 9 Score 64 86 69 86 59 87 A) 0.678 B) - 0.678 C) - 0.224 D) 0.

Identify which of these types of sampling is used: random, stratified, systematic, cluster, convenience.

  1. A tax auditor selects every 1000th income tax return that is received. A) Convenience B) Stratified C) Systematic D) Random E) Cluster

Solve the problem.

  1. Find the chi-square value χ (^2) L and χ (^2) R corresponding to a sample size of 22 and a

confidence level of 98 percent. A) 9.542, 40.289 B) - 8.897, 8.897 C) 8.897, 38.932 D) - 2.33, 2.

Find the indicated probability.

  1. A spinner has equal regions numbered 1 through 12. What is the probability that the spinner will stop on an even number or a multiple of 3? A)^2 3

B)^3

C)^5

D) 8

Solve the problem.

  1. How many ways can 5 people be chosen and arranged in order in a straight line if there are 8 people to choose from? A) 40 B) 120 C) 56 D) 6720

Find the mean and standard deviation for the given sample data.

22 31 43 37 29 28 28 28 30 49 40 32 25 41 41

A) mean = 31 standard deviation = 1.

B) mean = 33. standard deviation = 8. C) mean = 33. standard deviation = 7.

D) mean = 33. standard deviation = 7.

Answer Key Testname: STATAFINALMCF

1) B

2) D

3) D

4) C

5) C

6) A

7) D

8) C

9) C

10) B