A researcher is interested in estimating the mean BMI of adults in UAE . He selected a random sample of 20 adults which yielded a mean of 24.5 kg/m2 and a standard deviation of 1.3 kg/m2. He believes that the distribution of BMI is strongly skewed. Which distribution should he use to construct the confidence interval? a. Neither t nor standard normal distribution.

b. t distribution with 19 degrees of freedom

c. t distribution with 20 degrees of freedom

d. Standard normal distribution

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost

Asap (i need to finish this quick) graph complete the sequence of transformations that produces △x'y'z' from △xyz. a clockwise rotation ° about the origin followed by a translation units to the right and 6 units down produces δx'y'z' from δxyz.