29% of car crashes occur within 2 miles of the motorists home. A researcher thinks it has decreased. a) Express the null and alternative hypotheses in symbolic form for this claim. When entering the decimal enter the zero before the decimal point. For example, if you have 35%, enter it as 0.35. H0:H0:  Ha:Ha:  Use the following codes to enter the following symbols:      ≥≥ enter >=      ≤≤ enter <=      ≠≠ enter != b) You decide to survey 100 adult Americans and find that 70 of car crashes occur within 2 miles of the motorists home. Find the test statistic. Round to two decimal places. z=z=  c) What is the p-value? Round to 4 decimals. p=p=  d) Make a decision base on a 0.05 significance level. Do not reject the null Reject the null e) What is the conclusion? There is sufficient evidence to support the claim that 29 % of car crashes occur within 2 miles of the motorists home has decreased There is not sufficient evidence to support the claim that 29 % of car crashes occur within 2 miles of the motorists home has decreased

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question

29% of car crashes occur within 2 miles of the motorists home. A researcher thinks it has decreased.

a) Express the null and alternative hypotheses in symbolic form for this claim. When entering the decimal enter the zero before the decimal point. For example, if you have 35%, enter it as 0.35.

H0:H0: 

Ha:Ha: 

Use the following codes to enter the following symbols:
     ≥≥ enter >=
     ≤≤ enter <=
     ≠≠ enter !=

b) You decide to survey 100 adult Americans and find that 70 of car crashes occur within 2 miles of the motorists home. Find the test statistic. Round to two decimal places.

z=z= 

c) What is the p-value? Round to 4 decimals.

p=p= 

d) Make a decision base on a 0.05 significance level.

  • Do not reject the null
  • Reject the null



e) What is the conclusion?

  • There is sufficient evidence to support the claim that 29 % of car crashes occur within 2 miles of the motorists home has decreased
  • There is not sufficient evidence to support the claim that 29 % of car crashes occur within 2 miles of the motorists home has decreased
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Point Estimation, Limit Theorems, Approximations, and Bounds
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.
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman