WebFeb 10, 2005 · The mean weight of 500 male students at a certain school is 150 lbs. and the standard deviation is 15 lbs. Assuming that the weights are normally distributed, how many students weight (a) between 135 and 165 lbs., (b) more than 180 lbs. or less than 120 lbs.? THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION. WebThe mean weight of 150 students in a class is 60 kg. The mean weight of boys in the class is 70 kg. and that of the girls is 55 kg. Find the number of girls in the class.
The mean weight of 150 students in a class is 60kg The mean …
WebSep 23, 2024 · The mean weight of 150 students in a class is 60kg the mean weight of boys is 70kg with a standard deviation of 10kg for the girls the mean weight is 55kg - 151… brunomondi28 brunomondi28 24.09.2024 WebApr 19, 2015 · The mean weight of 150 students in a class is 60 kg. The mean weight of boys os 70 kg, while that of the girls is 55 kg. Find the number of boys and girls in the class. Share with your friends 1 Follow 0 Pooja Khanna, Meritnation Expert added an answer, on 19/4/15 Here is the link for the answer to your query: in the night garden jumping
The mean weight of 150 students in a class is 60kg the mean weight …
WebDec 17, 2024 · Therefore, Total weight of 150 students = (150×60)Kg=9000Kg Now, mean weight of all boys from the class is 70 kg and mean weight of all girls from the class is 55 kg. Let the number of girls be x, then number of boys be (150 - x) Therefore, Total weight of class = weight of all boys + weight of all girls 9000= (150−x)×70+55x 9000=10500−70x+55x WebNov 17, 2024 · It is given that mean weight of 150 students in a certain class is 60 kg. Let M be the mean weight of 150 students ⇒ M = ∑ i = 1 150 x i 150 = 60 ⇒ ∑ i = 1 150 x i = … WebApr 23, 2024 · Given: Total students in class = 150 and Mean weight = 60 kg. ∴ Total weight = 150 × 60 = 9000 kg. Let the total number of boys = x. Mean weight of boys = 70 kg. Total … new image health food store in lexington tn