A business school claims that students who complete a three month course of typing course can type on average, at most 1200 words an hour. A random sample of 36 students who completed this course typed, on average, 1230 words an hour with a standard deviation of 100 words. Using the 5% significance level, can you conclude that the claim of the business school is true? State null and altemative hypothesis.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
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A business school claims that students who complete a three month course of typing
course can type on average, at most 1200 words an hour.
A random sample of 36 students who completed this course typed, on average, 1230
words an hour with a standard deviation of 100 words.
Using the 5% significance level, can you conclude that the claim of the business school is
true? State null and alternative hypothesis.
Transcribed Image Text:A business school claims that students who complete a three month course of typing course can type on average, at most 1200 words an hour. A random sample of 36 students who completed this course typed, on average, 1230 words an hour with a standard deviation of 100 words. Using the 5% significance level, can you conclude that the claim of the business school is true? State null and alternative hypothesis.
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