The accompanying relative frequency ogive represents the composite score on a standardized test for a high school graduating class. Complete parts (a) through (d) below. W Click the icon to view the ogive. (a) What is the class width? 6 (Type a whole number.) Ogive of Composite Scores (b) Approximately 10% of students had a composite score below what level? 18 (Type a whole number.) (c) What percentage of students had a composite score less than 36? 0.9- (Type a whole number.) 0.8- 0.7- 06- 0.5- 0.4- 0.3- 0.2- 0.1- 12 18 24 30 36 42 48 54 Composite Score Print Done Cumulative Relative Frequency

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.