The weights of steers in a herd are distributed normally. The standard deviation is 300lbs300 lbs and the mean steer weight is 1500lbs1500 lbs. Find the probability that the weight of a randomly selected steer is between 17701770 and 2009lbs2009 lbs. Round your answer to four decimal places.

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