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Directions: Formulate the null and alternative hypothesis in a statement form. Identify whether it s one-tailed or two-tailed. If the hypothesis is one tailed, identify its direction whether it is left or right. If two tailed, write both sides. 1. A teacher in Math announced that the mean score of Grade 9 students in the first quarterly assessment in Mathematics was 89 and standard deviation was 6. One student, who believed that he mean score was less than this, randomly selected 30 students and computed the mean score. 2. An academic organization claimed that Grade 11 students' study time is at most 240 minutes

Directions: Formulate the null and alternative hypothesis in a statement form. Identify whether it s one-tailed or two-tailed. If the hypothesis is one tailed, identify its direction whether it is left or right. If two tailed, write both sides. 1. A teacher in Math announced that the mean score of Grade 9 students in the first quarterly assessment in Mathematics was 89 and standard deviation was 6. One student, who believed that he mean score was less than this, randomly selected 30 students and computed the mean score. 2. An academic organization claimed that Grade 11 students' study time is at most 240 minutes

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 13PPS
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SUBJECT: STATISTICS AND PROBABILITY
Directions: Formulate the null and alternative hypothesis in a statement form. Identify whether it is one-tailed or two-tailed. 

!!! If the hypothesis is one tailed, identify its direction whether it is left or right. If two tailed, write both sides.  !!!

Directions: Formulate the null and alternative hypothesis in a statement form. Identify whether it is one-tailed or two-tailed. If the hypothesis is one tailed, identify its direction whether it is left or right. If two tailed, write both sides. 1. A teacher in Math announced that the mean score of Grade 9 students in the first quarterly assessment in Mathematics was 89 and standard deviation was 6. One student, who believed that the mean score was less than this, randomly selected 30 students and computed the mean score. 2. An academic organization claimed that Grade 11 students' study time is at most 240 minutes per day, on average. Another survey was conducted to find whether the claim is true. The group took a random sample of 30 students and found a mean study time of 300minutes with standard deviation of 90 minutes.
Transcribed Image Text:Directions: Formulate the null and alternative hypothesis in a statement form. Identify whether it is one-tailed or two-tailed. If the hypothesis is one tailed, identify its direction whether it is left or right. If two tailed, write both sides. 1. A teacher in Math announced that the mean score of Grade 9 students in the first quarterly assessment in Mathematics was 89 and standard deviation was 6. One student, who believed that the mean score was less than this, randomly selected 30 students and computed the mean score. 2. An academic organization claimed that Grade 11 students' study time is at most 240 minutes per day, on average. Another survey was conducted to find whether the claim is true. The group took a random sample of 30 students and found a mean study time of 300minutes with standard deviation of 90 minutes.
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