Thanh Thao enterprise buys a production equipment, the total payment price is 1,320,000,000 VND, 10% VAT, has not yet paid the seller. Shipping cost 4,000,000 VND, 10% VAT, paid in cash. The cost of hiring an appraisal engineer is VND 11,000,000, including 10% VAT. The cost of installation and testing is VND 6,300,000, including 5% VAT, not yet paid to the seller. The original cost of this equipment is:

Two researchers are attempting to create a new psychotherapy protocol that more reduces panic attacks. they believe that they have succeeded and are now in the clinical trial period of their protocol's development. they are working with several cohort groups, some of which have been through the new protocol, while others have done the standard protocol currently recommended. if these researchers are interested in evaluating the difference in the percentage of test subjects who successfully decreased their panic attacks in 2 months on the new protocol versus the percentage of test subjects who successfully decreased their panic attacks in 2 months with the traditional protocol, which of the following statistical tests would be most appropriate? a. analysis of variance (anova) b. correlation c. chi-square test d. paired t-test e. independent t-test