You may need to use the appropriateappendix tableortechnologyto answer this question.The following results are for independent random samples taken from two populations.

Sample 1	Sample 2
n1= 20	n2= 30
x1=22.9	x2= 20.1
s1=2.4	s2=4.6

(a)What is the point estimate of the difference between the two population means? (Use

x₁x₂.

)(b)What is the degrees of freedom for thetdistribution? (Round your answer down to the nearest integer.)(c)At 95% confidence, what is the margin of error? (Round your answer to one decimal place.)(d)What is the 95% confidence interval for the difference between the two population means? (Use

x₁x₂.

Round your answers to one decimal place.) to