EBK STATISTICS FOR PEOPLE WHO (THINK TH
EBK STATISTICS FOR PEOPLE WHO (THINK TH
6th Edition
ISBN: 8220103435277
Author: SALKIND
Publisher: SAGE
Question
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Chapter 19, Problem 1TP
To determine

The participants that are really (the most) industrious but not very (the

least) proficient.

Expert Solution & Answer
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Answer to Problem 1TP

The most industrious (category 10) and the least proficient (proficiency

level 1) number is 6.

Explanation of Solution

Given information:

The data are obtained by the link given below:

edge.sagepub.com/salkind6e.

Calculation:

Steps for crosstabs in SPSS are s follows:

  • Select Analyze → Descriptive Statistics → Crosstabs and you will see the Crosstabs dialog box
  • Move the variable named Industriousness to the Row(s): box.
  • Move the variable named Proficiency to the Column(s): box.
  • Click OK and the results of the analysis.

Output obtained from SPSS is given below:

EBK STATISTICS FOR PEOPLE WHO (THINK TH, Chapter 19, Problem 1TP , additional homework tip  1

EBK STATISTICS FOR PEOPLE WHO (THINK TH, Chapter 19, Problem 1TP , additional homework tip  2

From the above table, the most industrious value is 10 because the range of industriousness is 1 to 10,  and the least proficiency is 1 because the range of proficiency is 1 to 5. Therefore, the most industrious (category 10) and the least proficient (proficiency level 1) number is 6.

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To  evaluate  the  success  of  a  1-year  experimental  program  designed  to  increase  the  mathematical achievement of underprivileged high school seniors, a random sample of participants in the program will be selected and their mathematics scores will be compared with the previous year’s  statewide  average  of  525  for  underprivileged  seniors.  The  researchers  want  to  determine  whether the experimental program has increased the mean achievement level over the previous year’s statewide average. If alpha=.05, what sample size is needed to have a probability of Type II error of at most .025 if the actual mean is increased to 550? From previous results, sigma=80.

Chapter 19 Solutions

EBK STATISTICS FOR PEOPLE WHO (THINK TH

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