16) When it comes to the different diagnoses made in early childhood, a very common one is children with developmental delays. One area that children show delays in is their speech development. A speech therapist is interested in knowing whether a new stimulation technique affects language in 2-year-old children. To measure their language, she utilizes the REEL-4, which is a standardized test that has a mean of 65 and a standard deviation of 5. She utilizes a random sample of 80 children. After administering the new stimulation technique, she finds that the sample of 2-year-olds finished with a mean of 66.29. Test the null hypothesis at the .05 level of significance.
16) When it comes to the different diagnoses made in early childhood, a very common one is children with developmental delays. One area that children show delays in is their speech development. A speech therapist is interested in knowing whether a new stimulation technique affects language in 2-year-old children. To measure their language, she utilizes the REEL-4, which is a standardized test that has a mean of 65 and a standard deviation of 5. She utilizes a random sample of 80 children. After administering the new stimulation technique, she finds that the sample of 2-year-olds finished with a mean of 66.29. Test the null hypothesis at the .05 level of significance.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 42PFA
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Transcribed Image Text:16) When it comes to the different diagnoses made in early childhood, a very common one is
children with developmental delays. One area that children show delays in is their
speech development. A speech therapist is interested in knowing whether a new
stimulation technique affects language in 2-year-old children. To measure their language,
she utilizes the REEL-4, which is a standardized test that has a mean of 65 and a standard
deviation of 5. She utilizes a random sample of 80 children. After administering the new
stimulation technique, she finds that the sample of 2-year-olds finished with a mean of
66.29. Test the null hypothesis at the .05 level of significance.
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