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USE THE INFORMATION BELOW TO ANSWER QUESTIONS 19 TH RU 21 The Natural Resources Defense Council (NDRC) is a large organization dedicated to safeguarding people,
USE THE INFORMATION BELOW TO ANSWER QUESTIONS 19 TH RU 21 The Natural Resources Defense Council (NDRC) is a large organization dedicated to safeguarding people, plants and animals on the earth. They work to support clean air, clean waterand healthy communities with an emphasis on pointing out water concerns in communities across the planet. Flint, Michigan has a known problem with an excess of lead in their drinking water which is very harmful to the health of the people in the community. especially Children. The blood lead level in children in Flint during the peak ofthe water crisis [2015) is known to be approximately normally distributed with a mean of 1.31 micrograms per deciliterwith a standard deviation of 0.030 micrograms per deciliter. Assume that ourinterest is in probabili es about the blood lead level of a random child in Flint in the year 2015. Question 19 1 pts Pick the equation most appropriate to deal with the problem above. Oiiz' oz: an 0 dz) : \"02le r9)\" 7x7 OZ-T Question 20 1 pts What is the probabilitythat a random child in Flint during 2015 had a blood lead level in excess of 1.33? 0 0.2972 0 0.2167 0 0.1324 0 0.2514 Question 21 1 pts Select the value (rounded to two decimal places) that corresponds to the 60th percentile of this distribution. Note: Recall that. for example. the 65th percentile corresponds to the value of blood lead level where 65% of the distribution is below that particular value. 0 134 micrograms per deciliter o 1.30 micrograms per deciliter Q 123 micrograms per deciliter o 1.32 micrograms per deciliter
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