WebFeb 4, 2024 · the mean height of all 32 students is 1.515 meters. Total number of students = 32 Mean height of all students = 1.515 We can obtain the sum of all student's height : Number if students * mean height = 32 * 1.515 = 48.48 Number of boys = 14 Mean height of boys = 1.56m We can obtain the sum of all boys height : Number if students * mean height WebMar 10, 2014 · Mean height = (sum of heights of students)/ (Number of students) 150 = (sum of heights of students)/ (30) Hence, Sum of heights of students = 4500 cm Given one observation is wrongly copied as 135 cm instead of 165 cm Error in the entering the observation = 165 – 135 = 40 cm Hence correct sum of heights of students = 4500 +40 = …
In a class of 32 students the mean height of the 14 boys is 1
WebThomas wants to estimate the mean height of students attending his college. He records the heights of 25 randomly selected students attending the college. What is the … WebJun 14, 2024 · The height of the students in a certain class is following normal distribution with mean height as 165 cm and standard deviation of 25 cm. There are 60 students in … on your way food store
ML Aggarwal Class 9 Solutions for ICSE Maths Chapter 20 …
WebMar 23, 2024 · Transcript. Ex 3.1, 1 Find the range of heights of any ten students of your class. Let heights of 10 students be 120 cm, 125 cm, 150 cm, 110 cm, 148 cm, 143 cm, 105 cm, 149 cm, 130 cm, 115 cm Range = Maximum height − Minimum height = 150 − 105 = 45 cm. Next: Ex 3.1, 2 Important → Ask a doubt. Chapter 3 Class 7 Data Handling. WebA class has 25 students of which 10 are boys (you may assume that the other 15 are girls). The class average (mean) height is metres and the mean height for boys is B metres. The … WebAug 9, 2024 · [Solved] The mean height of 25 boys in a class is 150 cm, and the mea Home Quantitative Aptitude Average Question Download Solution PDF The mean height of 25 … iowa 5 day hunting license