by thu anh le lily han samantha haber
Download
Skip this Video
Download Presentation
By: Thu-Anh Le, Lily Han & Samantha Haber

Loading in 2 Seconds...

play fullscreen
1 / 17

By: Thu-Anh Le - PowerPoint PPT Presentation


  • 230 Views
  • Uploaded on

Who Spends More Time Grooming?. By: Thu-Anh Le, Lily Han & Samantha Haber. Introduction. Typically, in society, when it comes to physical appearances and looks, it is believed that females spend more time grooming than males

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'By: Thu-Anh Le' - ryanadan


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
by thu anh le lily han samantha haber

Who Spends More

Time Grooming?

By: Thu-Anh Le, Lily Han & Samantha Haber

introduction
Introduction
  • Typically, in society, when it comes to physical appearances and looks, it is believed that females spend more time grooming than males
  • In addition, females are believed to sleep more than males in order to maintain their beauty sleep
overview of our project
Overview of our project
  • Since this tends to be society’s belief, we were interested in finding out how true these statements were when applied to the UOP campus.
  • Therefore, our project is testing to see if:
    • The mean minutes that females spend grooming in the morning is greater than the mean minutes that males spend grooming in the morning.
    • The mean hours of sleep that females get a day is greater than the mean hours of sleep that males get a day
our questions
Our Questions
  • Do females spend more time than males grooming in the morning?
  • Do females get more hours of sleep a day than males?
  • Example of our Survey
how statistics can help us find an answer
How Statistics Can Help Us Find an Answer?
  • The different data that we have collected on the amount of time spent on grooming and sleeping of college students was used to find out if there is a difference in amount of time spent grooming in the morning and sleeping for different genders
  • A independent analysis was used to determine whether or not the stereotype is true that females spend more time grooming and sleeping than males
  • A Z distribution was used since we had a sample size of more than 30
what is considered grooming
Females

Brushing Teeth

Combing Hair

Hair spraying

Washing Face

Shaving

Applying Makeup

Applying Lotion

Showering

Males

Applying Cologne

Shaving

Brushing Teeth

Combing Hair

Gel Hair

Washing Face

Showering

Applying Aftershave

What is Considered Grooming?
defining our parameters
Defining our Parameters
  • Collected data from 38 females and 32 males in the library and on our online survey site.
  • Defining the sample means as:

µ1= mean minutes that females spend grooming in the morning µ2= mean minutes that males spend grooming in the morning

  • The null and alternative hypothesis are as follows:

Ho: µ1 = µ2; µ1–µ2 = 0

Ha: µ1> µ2; µ1 – µ2 > 0

  • We predict that females spend more time grooming than males
defining our parameters8
Defining our Parameters
  • We collected data from 38 females and 32 males in the library and on our online survey site.
  • Defining the sample means as:

µ1= mean hours of sleep that females get a day

µ2= mean hours of sleep that males get a day

  • The null and alternative hypothesis are as follows:

Ho: µ1 = µ2; µ1–µ2 = 0

Ha: µ1> µ2; µ1 – µ2 > 0

  • We predict that females get more hours of sleep a day
calculations
Calculations
  • Two-Sample Z-Test: Minutes Spent Grooming, Gender
  • Two-sample Z for Minutes Spent Grooming
  • Gender N Mean StDev
  • F 38 29.31579 20.50195
  • M 32 20.31250 17.48075
  • Difference = mu (F) - mu (M)
  • Rejection Region: Z > 1.645
  • Z Test of difference = 0 (vs >): Z-Value = 1.98
  • P-Value = 0.0239
  • 95% Confidence Interval: (0.105, 17.901).
calculations12
Calculations
  • Two-Sample Z-Test: Hours Spent Sleeping, Gender
  • Two-sample Z for Hours Spent Sleeping
  • Gender N Mean StDev
  • F 38 6.513158 1.205207
  • M 32 6.21875 1.106706
  • Difference = mu (F) - mu (M)
  • Rejection Region: Z > 1.645
  • Z Test of difference = 0 (vs >): Z-Value = 1.06
  • P-Value = 0.1446
  • 95% Confidence Interval: (-0.248, 0.837).
conclusion for minutes spent grooming
Conclusion for Minutes Spent Grooming
  • Since the observed Z of 1.98 falls within the rejection region of Z > 1.645, we reject the Ho, therefore females do spend more time grooming than males.
  • Since the p-value of 0.0239 is less than the 0.05 level of significance, we reject the Ho.
  • We are 95% confident that (µ1 - µ2) will be in the interval (0.105, 17.901).
conclusion for hours spent sleeping
Conclusion for Hours Spent Sleeping
  • Since the observed Z of 1.06 doesn’t fall within the rejection region of Z > 1.645 we fail to reject the Ho. Therefore, there isn’t a significant difference between the hours of sleep that males & females get.
  • Since the p-value of 0.1446 is greater than the 0.05 level of significance, we fail to reject the Ho.
  • We are 95% confident that (µ1 -µ2) will be in the interval (-0.248, 0.837).
  • Since 0 is a possible value in the interval (-0.248, 0.837), (µ1 -µ2) may be equal to 0, meaning that µ1 may be equal to µ2, therefore we fail to reject the Ho and there isn’t a significant difference between the hours of sleep that male and females get.
ad