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The Marcus High School Marching Band has approximately 300 students. The band director stated that the...

The Marcus High School Marching Band has approximately 300 students. The band director stated that the average band member spends 6 hours of practice time each week. 120 band members were polled and asked how much they practiced. The mean was 5.8 hrs and the standard deviation was 2. The standard deviation of 2 came from the sample of 120 band members. The level of significance was 0.05. What is the critical value and test statistic? What is the appropriate decision?

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