She wants to know if the technique has helped.
View the step-by-step solution to:

A researcher is using a special phonics reading technique to help 10-year-olds to read. She wants to know if the

technique has helped. To assess reading comprehension, she selects a nationally known test of comprehension on which the national mean score for 10-year-olds is 50 with a standard deviation of 7.5. The mean of the sample of 50 students is 54. Does the special phonics reading technique increase comprehension? Use .05 as the level of significance.

Compute the test statistic. Report your answer to two decimal places.

Top Answer

In this particular question, z-test could... View the full answer

Sign up to view the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question