How many doctors are needed for heart surgery

In florida, refusal the submit to testing (first offense) results in a) license revocation b)a 30 day suspension c) a 6 month suspension d) a 12 month suspension

Most small cars a. more power than larger cars b. the same power as larger cars c. less power than larger cars

The difference of sample means of two populations is 55.4, and the standard deviation of the difference of sample means is 28.1. which statement is true if we are testing the null hypothesis at the 95% confidence level? a. the difference of the two means is significant, so the null hypothesis must be rejected. b. the difference of the two means is significant, so the null hypothesis must be accepted. c. the difference of the two means is not significant, so the null hypothesis must be rejected. d. the difference of the two means is not significant, so the null hypothesis must be accepted.