b.What measure of central tendency is most appropriate for describing these data? Why?
5.On a standard measure of hearing ability, the mean is 300, and the standard deviation is 20. Provide the Zscores for persons whose raw scores are 340, 310, and 260. Provide the raw scores for persons whose Zscores on this test are 2.4, 1.5, and -4.5.Use the fomula z = (raw score - mean)/(standard deviation)The the formula raw score = (z score) (stand. dev) + (mean)6.Using the unit normal table, find the proportion under the standard normal curve that lies in the tail for each of the follow using table starting on page 673 (Hint: Remember to change allpercents to decimals):a.Z= 1.00 b.Z= -1.05 c.Z= 0 d.Z= 2.80 e.Z = 1.96