Please check my answers; am i doing them wrong? Also I dont understand how to do

Question

Please check my answers; am i doing them wrong?

Also I dont understand how to do parts: j & k

There are two types of cholesterol: low density lipoprotein cholesterol (LDL also called "bad' cholesterol and high density lipoprotein cholesterol (HDL, also called "Rood" cholesterol). The lower the LDL cholesterol level, the healthier the person is. Suppose e LDL cholesterol level in e general population is normally dislribuled with a mean of 140 and a standard deviation of 32. Questions ia --k are based on the population distribution of LDL (f Toms LDL level is higher than 65% of people in the population. What is Tom's LDL level? 152.4800 (g) Katie's LDL level is on the 80th percentile. What is Katie s LDL level? 166.8800 (h Eric's LDL level is on the 40th percentile, what is Eric's LDL level? 132.0000 If we randomly select a person from the population, what is the probability of this person's LDL level being exactly equal to 195? 00000 peuples LDL levels o Z scure e median o muse Z skures -0.3900 (k) If we convert people's LDL levels into Zscores, what is the variance of those Z scores?

Explanation / Answer

f) for 65 percentile z score=0.3853

hence corresponding score =mean +z*std deviation =152.33

g)for 80th percentile ; z score=0.8416

hence corresponding score =mean +z*std deviation=166.93

h)for 40th percentile , z=-0.2533

corresponding score =mean +z*std deviation=131.89

(i)0.00000

I)median =0.0000

k) variance =1

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