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24. (a) A distribution consists of three components with total frequencies of 200, 250 and 300 having mean 25, 10 and 15 respectively. Find the mean of combined distribution. (b) In a series with 100 items, having simple mean of 40, later on it was discovered that two items of 45, 35 were wrongly taken as 35 and 25. Find the correct mean. (c)A man travelled by auto for 3 days. He covered 480 kilometres each day. He drove the first day 10 hours @48 kilometres per hour, the second day 12 hours @ 40 kilometres per hour and third day 15 hours @ 32 kilometres per hour. What was his average speed ?

24. (a) A distribution consists of three components with total frequencies of 200, 250 and 300 having mean 25, 10 and 15 respectively. Find the mean of combined distribution. (b) In a series with 100 items, having simple mean of 40, later on it was discovered that two items of 45, 35 were wrongly taken as 35 and 25. Find the correct mean. (c)A man travelled by auto for 3 days. He covered 480 kilometres each day. He drove the first day 10 hours @48 kilometres per hour, the second day 12 hours @ 40 kilometres per hour and third day 15 hours @ 32 kilometres per hour. What was his average speed ?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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24. (a) A distribution consists of three components with total frequencies of 200, 250 and 300 having mean 25, 10 and 15 respectively. Find the mean of combined distribution. (b) In a series with 100 items, having simple mean of 40, later on it was discovered that two items of 45, 35 were wrongly taken as 35 and 25. Find the correct mean. (c)A man travelled by auto for 3 days. He covered 480 kilometres each day. He drove the first day 10 hours @ 48 kilometres per hour, the second day 12 hours @ 40 kilometres per hour and third day 15 hours @ 32 kilometres per hour. What was his average speed ?
Transcribed Image Text:24. (a) A distribution consists of three components with total frequencies of 200, 250 and 300 having mean 25, 10 and 15 respectively. Find the mean of combined distribution. (b) In a series with 100 items, having simple mean of 40, later on it was discovered that two items of 45, 35 were wrongly taken as 35 and 25. Find the correct mean. (c)A man travelled by auto for 3 days. He covered 480 kilometres each day. He drove the first day 10 hours @ 48 kilometres per hour, the second day 12 hours @ 40 kilometres per hour and third day 15 hours @ 32 kilometres per hour. What was his average speed ?
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