- 30 Assume Critical Reading Scores For A Standardized Test Are Distributed As N 580 100 Complete Parts A Through D 1 (116.8 KiB) Viewed 10 times
30. Assume critical reading scores for a standardized test are distributed as N(580, 100). Complete parts (a) through (d) below. a. Find the test score at the 75th percentile. The 75th percentile is (Round to the nearest integer as needed.) b. Find the test score at the 25th percentile. The 25th percentile is (Round to the nearest integer as needed.) c. Find the interquartile range for test scores. The interquartile range is (Round to the nearest integer as needed.) d. Is the interquartile range larger or smaller than the standard deviation? The interquartile range is (1) (1) O smaller O larger than the standard deviation. 31. The average birth weight of domestic cats is about 4 ounces. Assume that the distribution of birth weights is Normal with a standard deviation of 0.6 ounce. a. Find the birth weight of cats at the 80th percentile. b. Find the birth weight of cats at the 20th percentile. a. The birth weight of cats at the 80th percentile is (Round to two decimal places as needed.) b. The birth weight of cats at the 20th percentile is (Round to two decimal places as needed.) ounces. ounces.