Question

Hi, can you help me answer this question please, thank you!

Answer 1

Given information:

`\begin{gathered} H_0\colon\mu_1=\mu_2 \\ H_a\colon\mu_1<\mu_2 \end{gathered}`

n1=12

Mean x1=75.4

SD1=9.7

n2=19

Mean x2=83.3

SD2=17.8

significance level alfa=0.02

To find the test statistic let's use the formula: