Help Please: length, in minutes, of typical daily commute.

[anthony1954]

Each person in random samples of 227 male and 253 female working adults living in a certain town in Canada was asked how long, in minutes, his or her typical daily commute was. (Use a statistical computer package to calculate the P-value. Use μ_males − μ_females. Round your test statistic to two decimal places, your df to the nearest whole number and your P-value to three decimal places.)

Males	Females
Sample size	x	s	Sample size	x	s
227	30.2	24.0	253	27.9	24.3

t	= ​
df	=
P	=

 

[Harry_the_cat]

Check out:

http://ncalculators.com/math-worksheets/how-to-calculate-t-test.htm

df = n₁ + n₂ ​- 2