Find the number of boys and the combined standard deviation
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.5: Comparing Sets Of Data
Problem 10PPS
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Question
![57. The mean weight of 150 students is 60 kg. The mean weight of boys is 70
ka with a standard deviation of 10 kg. For the girls, the mean weight is 55 kg and the
standard deviation is 15 kg. Find the number of boys and the combined standard deviation](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fcababf3f-d072-4c14-9c95-3519a3a93cc9%2F0e3ece9f-383e-48b6-ac73-082c73fd5e3f%2Fban6k9_processed.jpeg&w=3840&q=75)
Transcribed Image Text:57. The mean weight of 150 students is 60 kg. The mean weight of boys is 70
ka with a standard deviation of 10 kg. For the girls, the mean weight is 55 kg and the
standard deviation is 15 kg. Find the number of boys and the combined standard deviation
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