(Solution) - The average reading achievement score for second graders on a -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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The average reading achievement score for second graders on a nationally standardized test is 76.2%. The average score for Merriweather school district's 46 second graders on that same test is 74.6%. The standard deviation (using n - 1) is 3.1%.
a. State the directional hypothesis.
b. Determine the critical t for a = .05.
c. Calculate t, using the sample standard deviation as the estimated population standard deviation. Show your work.
d. Are Merriweather's second graders reading at a significantly lower level than second graders nationwide?