The amount of time that a customer waits on hold at a call center can be modeled by a uniform distribution on the interval from 0 seconds to 120 seconds. A) Draw a density curve to model the amount of time that a randomly selected customer waits on hold. Be sure to include scales on both axes.
B) About what percent of the time does a customer have to wait between 100 and 120 seconds?

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

Jordan got 27 out of 90 correct on his test . what fraction of the marks did her get correct

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