You randomly sample 4 attendants of a power posing seminar. you note that 3 of the 4 exhibit higher levels of confidence than the median of the general population. the probability of obtaining this result by chance (if those attending power posing seminars do not differ in their levels of confidence from the general population)

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables