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
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)
|
|
|||||||||
|
Sex |
n |
|
Std. Dev. |
Min. |
Q1 |
|
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 |
|
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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