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Serum cholesterol is an important risk factor for coronary disease. Suppose that serum cholesterol is approximately normally distributed with mean 210 mg/dL and standard deviation 52.15 mg/dL a Cholesterol levels in the top 17% are classified as high enough to warrant risk for heart disease. What cholesterol level corresponds to this cut-off? z= o cholesterol = mg/dL b. Suppose cholesterol levels in the bottom 42% are classified as normal. What cholesterol level corresponds to a normal reading? cholesterol mg/dL C. Between what two values do the middle 40% of cholesterol readings fall? o between mg/dL and mg/dL Note: z-scores should include 2 decimal places; all other answers should be rounded to 3 decimal places.please answer all parts.

math   Statistics-And-Probability   
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e) e chole stool level inthe top 17% axe reynally distrsībuched co, th a mean of 210 mg/dL The standoci dey?affor) a우 σ=52/5 mg/dl, p(X>x) = o.17 o .q5y 165253210.4565253 X 0q54165253 (S2.15)+ 210 χ = 259-7597 , 8 teek e, the cholestool level 260 mg/dL deshributed eith a mean The rtavelond devictim of σ: s 2-15 mg/dL =-o . 201,93474142- 20円 53.15 . .2019 (5215) +210 ㄨ二199.470915 Thene fa e, the choles hol level s 2oo m/dl cue nore that the too veduey aue neaded, one abve the mean and below he Yrean ngAF oe 가e meon.first. Te to substtute the valve of z in famalar, we get = 239.34746Find the value to the leerof the man위xst. The lolest z value cl an oo en af o:30 0.30 1 ae have to F182-6525y The amo Crnake cholestool level. and 23.34.mg/dL ?n betoeon 182, 6525

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