Variables Age at which first child was born           AGEKDBRN         Survey question: How old were you when your first child was born?  Respondent’s sex                                  SEX    Respondent’s sex (1 = male or 2 = female)   Descriptive Statistics: Sex n Mean Std. Dev. Min. Q1 Median Q3 Max. IQR male 679 25.5 5.91 12 21 25 29 51 8 female 987 23.4 5.45 13 19 22 27 45 8

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section11.3: Shapes Of Distributions
Problem 20E
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Variables

Age at which first child was born           AGEKDBRN

        Survey question: How old were you when your first child was born? 

Respondent’s sex                                  SEX

   Respondent’s sex (1 = male or 2 = female)

 

Descriptive Statistics:

Sex

n

Mean

Std. Dev.

Min.

Q1

Median

Q3

Max.

IQR

male

679

25.5

5.91

12

21

25

29

51

8

female

987

23.4

5.45

13

19

22

27

45

8

 

Descriptive Statistics:

Group

Sample Size

Mean

Std. Dev.

female

987

23.44

5.45

male

679

25.55

5.91

 

Conduct a significance test to investigate whether there is a difference between men and women in the mean age at which their first child was born. Use a .05 α-level (alpha level) for the test and a two-sided (non-directional) alternative hypothesis.

Question: what is the null hypothesis and alternative in words and in symbols. What is the p-value? What is your decision about the null hypothesis?

 

 

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