QuickHelper

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About QuickHelper

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Teaching Since: May 2017
Last Sign in: 357 Weeks Ago
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  • MBA, PHD
    Phoniex
    Jul-2007 - Jun-2012

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  • Corportae Manager
    ChevronTexaco Corporation
    Feb-2009 - Nov-2016

Category > Accounting Posted 29 Aug 2017 My Price 11.00

Immediate help only

Question description

 

Researchers investigated the physiological changes that accompany laughter. Ninety subjects (18-34 years old) watched film clips designed to evoke laughter. During the laughing period, the researchers measured the heart rate (beats per minute) of each subject, with the following summary results:

x overbar =73.3, s=5

It is well known that the mean resting heart rate of adults is 71beats per minute.

If a=0.10

find the rejection region for the test. Choose the correct answer below.

 

z>1.645 or z<-1.645

z<-1.645

z<-1.28

Z>1.28

z>1.645

z>1.28 or <-1.28

Calculate the value of the test statistic.

z=_________

(Round to two decimal places as needed.)Make the appropriate conclusion

Answers

QuickHelper
(10)
Status NEW Posted 29 Aug 2017 07:08 AM My Price 11.00

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