Two random samples are selected from two independent populations. a summary of the samples sizes, sample means, and sample standard deviations is given below: n1=43,n2=46,x¯1=58.6,x¯2=70.9,s1=5. 8s2=11 find a 94% confidence interval for the difference μ1−μ2 of the means, assuming equal population variances

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w

Susie wants to take her friend out for lunch.she wants to spend $9.75 each person. how much will she spend in all.