I find myself stuck on how to figure question 21 out.Where do I go from here?

70.5 mg/dL to 109.5 mg/dL. . 77 mg/dL to 103 mg/dL. d. 54 mg/dL to 126 mg/dL. 21. Assume blood-glucose levels in a population of adult women are approximately normally distributed with mean 90 mg/dL and standard deviation 13 mg/dL. - Suppose the "abnormal range" were defined to be glucose levels outside of 1.5 standard deviations of the mean. What percentage of individuals would be called "abnormal" and need to be retested? (note: this, and question 22 are the only timse you will need to consult a normal table or use the "rnorm" function in R to answer a question in this class) a. 1% mean = 90 b. 32% S- 13 C. 13% ACE 1 130. 93 319 28 - 0 0 d. 5% Pnorm ( 1.5 ) = 0. 93 31928 =0 %% / abnormal? 0. 866 3856 22. pnorm ( - 1. 5 ) = 0. 06 68072 Assume blood-glucose levels in a population of adult women are approximately normally distributed with mean 90 mg/dL and standard deviation 13 mg/dL