A decade-old study found that the proportion,p, , of high school seniors who believed that "getting rich" was an important personal goal was  70% . A researcher decides to test whether or not that percentage still stands. He finds that, among the  205  high school seniors in his random sample,  145  believe that "getting rich" is an important goal. Can he conclude, at the  0.10  level of significance, that the proportion has indeed changed? Perform a two-tailed test. Then complete the parts below.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
icon
Related questions
Question

A decade-old study found that the proportion,p,

, of high school seniors who believed that "getting rich" was an important personal goal was 

70%

. A researcher decides to test whether or not that percentage still stands. He finds that, among the 

205

 high school seniors in his random sample, 

145

 believe that "getting rich" is an important goal. Can he conclude, at the 

0.10

 level of significance, that the proportion has indeed changed?

Perform a two-tailed test. Then complete the parts below.

Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Recommended textbooks for you
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL