A professor notes that many of her students take notes on their laptops, while others take notes using paper. She wonders if using a laptop is as effective as handwriting notes because typing allows students to take notes much faster. Although this increased speed does allow for more information to be written, it also does not require as much processing of the information. While taking notes by hand, students must process the information and decide what is important. To test this possibility, the professor obtains a group of 90 students and randomly assigns each student to use a different note taking strategy while listening to an hour long lecture. The groups were:

Group 1: Handwritten notes

Group 2: Take notes on a laptop

Group 3: Take notes on a laptop, but instruct students that they should not record the lecture in as much detail as possible. Instead, they should try to write the main points.

The day after the lecture, the students took a multiple choice exam over the content of the lecture.

What is the symbolic null hypothesis (H0) for this study?

Group of answer choices

$\mu$ 1 ≠ μ 2 ≠ μ 3

$\mu$ 1 = μ 2 a n d / o r μ 1 = μ 3 a n d / o r μ 2 = μ 3

$\mu$ 1 = μ 2 = μ 3

$\mu$ 1 ≠ μ 2 a n d / o r μ 1 ≠ μ 3 a n d / o r μ 2 ≠ μ 3

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Question 11

A professor notes that many of her students take notes on their laptops, while others take notes using paper. She wonders if using a laptop is as effective as handwriting notes because typing allows students to take notes much faster. Although this increased speed does allow for more information to be written, it also does not require as much processing of the information. While taking notes by hand, students must process the information and decide what is important. To test this possibility, the professor obtains a group of 90 students and randomly assigns each student to use a different note taking strategy while listening to an hour long lecture. The groups were:

Group 1: Handwritten notes

Group 2: Take notes on a laptop

Group 3: Take notes on a laptop, but instruct students that they should not record the lecture in as much detail as possible. Instead, they should try to write the main points.

The day after the lecture, the students took a multiple choice exam over the content of the lecture.

What is the verbal null hypothesis (H0) for this study?

At least one of the populations’ mean multiple-choice exam scores is equal to at least one of the other populations’ mean multiple-choice exam scores.

The mean multiple-choice exam scores for all populations are equal.

The mean multiple-choice exam scores for all populations are not equal.

At least one of the populations’ mean multiple-choice exam scores is not equal to at least one of the other populations’ mean multiple-choice exam scores.

Question 12. A professor notes that many of her students take notes on their laptops, while others take notes using paper. She wonders if using a laptop is as effective as handwriting notes because typing allows students to take notes much faster. Although this increased speed does allow for more information to be written, it also does not require as much processing of the information. While taking notes by hand, students must process the information and decide what is important. To test this possibility, the professor obtains a group of 90 students and randomly assigns each student to use a different note taking strategy while listening to an hour long lecture. The groups were:

Group 1: Handwritten notes

Group 2: Take notes on a laptop

Group 3: Take notes on a laptop, but instruct students that they should not record the lecture in as much detail as possible. Instead, they should try to write the main points.

The day after the lecture, the students took a multiple choice exam over the content of the lecture.

What is the symbolic research hypothesis (H1) for this study?

Group of answer choices

$\mu$ 1 ≠ μ 2 a n d / o r μ 1 ≠ μ 3 a n d / o r μ 2 ≠ μ 3

$\mu$ 1 ≠ μ 2 ≠ μ 3

$\mu$ 1 = μ 2 a n d / o r μ 1 = μ 3 a n d / o r μ 2 = μ 3

$\mu$ 1 = μ 2 = μ 3

Question 13

A professor notes that many of her students take notes on their laptops, while others take notes using paper. She wonders if using a laptop is as effective as handwriting notes because typing allows students to take notes much faster. Although this increased speed does allow for more information to be written, it also does not require as much processing of the information. While taking notes by hand, students must process the information and decide what is important. To test this possibility, the professor obtains a group of 90 students and randomly assigns each student to use a different note taking strategy while listening to an hour long lecture. The groups were:

Group 1: Handwritten notes

Group 2: Take notes on a laptop

Group 3: Take notes on a laptop, but instruct students that they should not record the lecture in as much detail as possible. Instead, they should try to write the main points.

The day after the lecture, the students took a multiple choice exam over the content of the lecture.

What is the verbal research hypothesis (H1) for this study?

Group of answer choices

At least one of the populations’ mean multiple-choice exam scores is equal to at least one of the of the other populations’ mean multiple-choice exam scores.

The mean multiple-choice exam scores for all populations are equal.

The mean multiple-choice exam scores for all populations are not equal.

At least one of the populations’ mean multiple-choice exam scores is not equal to at least one of the of the other populations’ mean multiple-choice exam scores.