Find the standardized test statistic, t, to test the claim that

mu 11less than

Two samples are randomly selected and come from populations that are normal. The sample statistics are given below. Assume that sigma Subscript 1 Superscript 2 Baseline equals sigma Subscript 2 Superscript 2 Baseline .21=22.

n 1n1equals=15,

n 2n2equals=15,

x overbar 1x1equals=21.5421.54,

x overbar 2x2equals=24.0924.09,

s 1s1equals=2.9,

s 2s2equals=2.8

Question content area bottom

Part 1

A.

minus0.669

B.

minus1.667

C.

minus2.450

D.

minus3.165