Maurice Tutor

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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 13 Jan 2018 My Price 5.00

Frequency of public smiling

Smiling and Gender In a 1997 study, people were observed for about 10 seconds in public places, such as malls and restaurants, to determine whether they smiled during the randomly chosen 10-second interval. The table shows the results for comparing males and females. (Source: M. S. Chappell, Frequency of public smiling over the life span, Perceptual and Motor Skills, vol. 45: 474, 1997)

 

a. Find and compare the sample percentages of women who were smiling and men who were smiling.

b. Treat this as though it were a random sample, and test whether there are differences in the proportion of men and the proportion of women who smile. Use a significance level of 0.05.

c. Explain why there is such a small p-value even though there is such a small difference in sample percentages.

 

Answers

Maurice Tutor
(5)
Status NEW Posted 13 Jan 2018 09:01 PM My Price 5.00

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