4. The average age of bus drivers in Metro Manila is 38.8 years. Which of the following is a clue word for a null hypothesis? 5. What is the contrary or the alternative hypothesis... 4. The average age of bus drivers in Metro Manila is 38.8 years. Which of the following is a clue word for a null hypothesis? 5. What is the contrary or the alternative hypothesis of a clue word of the statement given above? 6. What will be a null hypothesis symbol of the statement? 7. What will be an alternative hypothesis symbol of the statement? 8. Which of the following is the contrary of the statement? The proportion of male rats in the population of rats is 45%. 9. Which of the following is a null hypothesis of the statement? The proportion of obese children ages 3-10 is higher than 40%. 7. The school record claims that the mean score in math of the incoming Grade 11 students is 81. the teacher wishes to find out if the claim is true. He tests if there is significant difference between the batch mean score and the mean score of students in his class. What is the null hypothesis of the statement?

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Understand the Problem

The image contains multiple-choice questions related to hypothesis testing and statistical concepts. Here's a breakdown:

  • Questions 1, 2, 3, 4: These focus on identifying key words, null hypothesis symbols, and alternative hypothesis symbols based on a given statement about the average age of bus drivers.
  • Questions 5, 6: These involve understanding contrary statements and null hypotheses related to proportions (male rats and obese children).
  • Question 7: This focuses on understanding null hypothesis.

Answer

Answers provided in the answer section.

Here are the answers to your questions:

  1. A. is
  2. D. none of these
  3. B. $H_o = 38.8$ yrs
  4. D. $H_a \neq 38.8$
  5. D. All of the above
  6. A. The proportion of obese children ages 3 - 10 is not higher than 40%.
  7. A. The mean score of the incoming Grade 11 students is 81.
Answer for screen readers

Here are the answers to your questions:

  1. A. is
  2. D. none of these
  3. B. $H_o = 38.8$ yrs
  4. D. $H_a \neq 38.8$
  5. D. All of the above
  6. A. The proportion of obese children ages 3 - 10 is not higher than 40%.
  7. A. The mean score of the incoming Grade 11 students is 81.

More Information

The null hypothesis often includes an "equal to" statement, while the alternative hypothesis represents what you are trying to find evidence for.

Tips

Be careful to distinguish between null and alternative hypotheses. The null hypothesis is a statement that there is no effect or no difference, while the alternative hypothesis is a statement that there is an effect or a difference.

Sources

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