Q6)As a development economist, you are interested in whether individuals in country A have a lower mean income than those in country B. You have available independent random samples of size 50 each from the two populations. In these samples,

XA=$500sA=$200XB=$600sB=$300

Assuming the population variances are equal, find the p-value and test the hypotheses

H0:BA=0

HA:BA>0

Q7)The pooled variance estimate sp2 calculated from this data is

Group of answer choices

35,000

55,000

65,000

45,000