Five students ran a race. their times were 51, 53, 55, 56, and 60 seconds. which of these times does a sixth student have to run in order to finish faster than average time of the other students? a 54 seconds b 55 seconds c 56 seconds d 57 seconds

Me with this one question, and i'll upvote the brainliest answer

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

Jonathan can throw a baseball 10 1/3 yards. his brother joey can throw a baseball 13 1/2 yards. how much father can joey throw the ball?