SOLVE IN R!

1) Using the data file "armspans2022_gender.csv"

a) what proportion of the class identified as female?

b) Fit the regression equation

E(armspan|isfemale)=0+1(isfemale)

Interpret the intereept

c) Interpret the slope from (b)

d) The summary command provides a t-statistic and p-value for the slope. What is this testing in this context?

armspans2022_gender.csv

height	armspan	is.female	compmother	compfather
74	76	0	Taller	Taller
65	65	0	Taller	About the same
60	53	1	Shorter	Shorter
69.75	69	0	Taller	About the same
70	72	0	Taller	About the same
68	70.5	0	Taller	Shorter
64	60	0	Taller	Taller
68	67	0	Taller	About the same
68	67	1	Taller	Shorter
63	60	1	About the same	Shorter
74	76.5	0	Taller	About the same
63	60	1	Taller	Don't know
69.5	71	0	Taller	Shorter
68	68	0	Taller	Shorter
72	74	0	Taller	Taller
67	64	1	Shorter	Shorter
68	67	0	Taller	About the same
74	78	0	Taller	Taller
71	73	0	Taller	Taller
63	62	1	Taller	Shorter
70	72	0	Taller	Taller
72	69.5	0	Taller	Taller
65.5	65	1	Taller	About the same
74.5	72.5	0	Taller	Taller
66	64	1	About the same	About the same
68	68.5	0	Taller	Shorter
69	70	0	Taller	Shorter
65	63	1	Taller	About the same
66	62	1	Taller	Shorter
72	68.5	0	Taller	Taller
72	71	0	Taller	Taller
71.65	71	0	Taller	Taller
72	NA	0	Taller	Taller
68	70	0	Taller	About the same
66.1417	68.8976	1	Taller	Shorter
63.5	59.5	1	Taller	Shorter
65	60	1	About the same	Shorter
67	64	0	Don't Know	Don't know
63.3	61	1	Shorter	Shorter
66.1	63	1	Taller	Shorter
64	63	0	Decline to answer	Taller
65.3543	60	1	Taller	Shorter
71	70	0	Taller	Taller
66	66	0	Taller	Shorter
70.5	75	0	Taller	About the same
66	65	0	Taller	Shorter