A survey conducted in 2015 by the health center at a university showed that 29% of the students smoked. In 2019, a new survey was conducted on a randome sample of 80 students from this university, and it was found that 22 of them smoke. We want to check whether these data provide evidence to suggest that the percentage of students who smoke has decreased over the four year period. Do the test at 19% signficance level. Select the tail type of this test.   a) Right tail   b) Left tail   c) Two tail   d) Center

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
Topic Video
Question

6. 

  1. A survey conducted in 2015 by the health center at a university showed that 29% of the students smoked. In 2019, a new survey was conducted on a randome sample of 80 students from this university, and it was found that 22 of them smoke. We want to check whether these data provide evidence to suggest that the percentage of students who smoke has decreased over the four year period. Do the test at 19% signficance level. Select the tail type of this test.
      a)
    Right tail
      b)
    Left tail
      c)
    Two tail
      d)
    Center
Expert Solution
steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Proportions
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
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
College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
College Algebra
College Algebra
Algebra
ISBN:
9781938168383
Author:
Jay Abramson
Publisher:
OpenStax