The standard deviation of the number of words in a sentence by students is 3 words. It is believed that the average number of sentences is 17 words. A teacher believes that her students write shorter sentences. She took a sample of 25 students and found that the average for this group is 16 words. Is the teacher correct in believing that her students write shorter sentences? Use α=.05. True False
The standard deviation of the number of words in a sentence by students is 3 words. It is believed that the average number of sentences is 17 words. A teacher believes that her students write shorter sentences. She took a sample of 25 students and found that the average for this group is 16 words. Is the teacher correct in believing that her students write shorter sentences? Use α=.05. True False
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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The standard deviation of the number of words in a sentence by students is 3 words. It is believed that the average number of sentences is 17 words. A teacher believes that her students write shorter sentences. She took a sample of 25 students and found that the average for this group is 16 words. Is the teacher correct in believing that her students write shorter sentences? Use α=.05.
True
False
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