derived from the test to survey of 258 student drivers and their attitudes toward speeding and reported the results in the British Journal of Educational Psychology (Vol. 80, 2010). One of the vari- ables of interest was the response to the question, “Are you confident that you can resist your friends' persuasion to drive faster?" Each response was measured on a 7-point scale, from 1 = “definitely no" to 7 = “definitely yes.“ The data were collected 5 months after the students had attended a safe-driver presentation. The psychologists re- ported a sample mean response of 4.98 and a sample stan- dard deviation of 1.62. Suppose it is known that the true mean response of students who do not attend a safe-driver, presentation is µ a. Set up the null and alternative hypotheses for test- ing whether the true mean student-driver response 5 months after a safe-driver presentation is larger E.38 Speeding and young drivers. Psychologists cond = 4.7. %3D than 4.7. b. Calculate the test statistic for the hypothesis test. uC. Find the rejection region for the hypothesis test, using a = .05. d. State the appropriate conclusion, in the words of the %3D bon problem. e. Do the test results indicate that the safe-driver presen- tation was effective in helping students feel more con- fident that they can resist their friends' persuasion to drive faster? Explain. distribution of rest
derived from the test to survey of 258 student drivers and their attitudes toward speeding and reported the results in the British Journal of Educational Psychology (Vol. 80, 2010). One of the vari- ables of interest was the response to the question, “Are you confident that you can resist your friends' persuasion to drive faster?" Each response was measured on a 7-point scale, from 1 = “definitely no" to 7 = “definitely yes.“ The data were collected 5 months after the students had attended a safe-driver presentation. The psychologists re- ported a sample mean response of 4.98 and a sample stan- dard deviation of 1.62. Suppose it is known that the true mean response of students who do not attend a safe-driver, presentation is µ a. Set up the null and alternative hypotheses for test- ing whether the true mean student-driver response 5 months after a safe-driver presentation is larger E.38 Speeding and young drivers. Psychologists cond = 4.7. %3D than 4.7. b. Calculate the test statistic for the hypothesis test. uC. Find the rejection region for the hypothesis test, using a = .05. d. State the appropriate conclusion, in the words of the %3D bon problem. e. Do the test results indicate that the safe-driver presen- tation was effective in helping students feel more con- fident that they can resist their friends' persuasion to drive faster? Explain. distribution of rest
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Please answer all parts except f

Transcribed Image Text:derived from the test to be
b. Calculate the test statistic for the hypothesis test.
slug C. Find the rejection region for the hypothesis test, using
boroubno for all student drivers is unlikely to be normal. Does
d. State the appropriate conclusion, in the words of the
e. Do the test results indicate that the safe-driver presen-
f. The distribution of response scores (on a 7-point scale)
tation was effective in helping students feel more con-
this impact the validity of the hypothesis test? Why or
66
ables of interest was the response to the question, "Are
you confident that you can resist vour friends' persuasion
to drive faster?" Each response was measured on a 7-point
scale, from 1 = “definitely no" to 7 = "definitely yes.
The data were collected 5 months after the students had
attended a safe-driver presentation. The psychologists re-
ported a sample mean response of 4.98 and a sample stan-
dard deviation of 1.62. Suppose it is known that the true
mean response of students who do not attend a safe-driver
Apresentation is µ = 4.7.
%3D
%3D
ered int
%3D
-1,29 a. Set up the null and alternative hypotheses for test-
Sihliel
thesis
a LOS
ing whether the true mean student-driver response
5. months after a safe-driver presentation is larger
than 4.7.
e Find the rejection region for the hypothesis test, using
bmu-
mol a = .05.
%3D
problem.
.20.
tation was effective in helping students feel more con-
Gident that they can resist their friends’ persuasion to
le sia
drive faster? Explain.
o distribution of response scores (on a 7-point scale)
ismator
why not?
here
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