Question 469218: I have a few problems similar to this and need some direction in solving them please!
a marketing firm asked a random set of married and single men as to how much they were willing to spend for a vacation. At a = .05, is there a difference in the two amounts?
sample size married 50, single 70
mean spending married 260, single 185
sample variance married 4500, single 9000
provided answers:
A) yes, because the test value 5.07 is outside the interval (-1.96, 1.96)
B) no, because the test value 2.00 is outside the interval (-1.96, 1.96)
C) no, because the terst value 0.34 is inside the interval (-1.96, 1.96)
D) yes, because the test value 2.00 is inside the interval (-1.96, 1.96)
Answer by edjones(8007)   (Show Source):
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