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The Mental Development Index (MDI) of the Bayley Scales of Infant Development is a standardized measure used in observing infants over time. It is approximately normal with a mean of 100 and a standard deviation of 16. Complete parts a through c a. What proportion of children has an MDI of () at least 1267 (4) at least 737 () The proportion of children having an MDI of at least 126 is 0.0521 (Round to four decimal places as needed.) (6) The proportion of children having an MDI of at least 73 is 0.9543 (Round to four decimal places as needed.) b. Find the MDI score that is the 71st percentile The 71st percentie MDI score is (Round to two decimal places as needed.)

The Mental Development Index (MDI) of the Bayley Scales of Infant Development is a standardized measure used in observing infants over time. It is approximately normal with a mean of 100 and a standard deviation of 16. Complete parts a through c a. What proportion of children has an MDI of () at least 1267 (4) at least 737 () The proportion of children having an MDI of at least 126 is 0.0521 (Round to four decimal places as needed.) (6) The proportion of children having an MDI of at least 73 is 0.9543 (Round to four decimal places as needed.) b. Find the MDI score that is the 71st percentile The 71st percentie MDI score is (Round to two decimal places as needed.)

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 14PPS
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The Mental Development Index (MDI) of the Bayley Scales of Infant Development is a standardized measure used in observing infants over time. It is approximately normal with a mean of 100 and a standard deviation of 16. Complete parts a through c a. What proportion of children has an MDI of () at least 1267 () at least 737 () The proportion of children having an MDI of at least 126 is 0.0521. (Round to four decimal places as needed.) (i) The proportion of children having an MDI of at least 73 is 0.9543 (Round to four decimal places as needed.) b. Find the MDI score that is the 71st percentile The 71st percentile MDI score is (Round to two decimal places as needed.) CITE
Transcribed Image Text:The Mental Development Index (MDI) of the Bayley Scales of Infant Development is a standardized measure used in observing infants over time. It is approximately normal with a mean of 100 and a standard deviation of 16. Complete parts a through c a. What proportion of children has an MDI of () at least 1267 () at least 737 () The proportion of children having an MDI of at least 126 is 0.0521. (Round to four decimal places as needed.) (i) The proportion of children having an MDI of at least 73 is 0.9543 (Round to four decimal places as needed.) b. Find the MDI score that is the 71st percentile The 71st percentile MDI score is (Round to two decimal places as needed.) CITE
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