Perform the Indicated Sign Test $$\alpha = 0.05$$

question 75

Essay

Perform the indicated sign test. Be sure to do the following: Identify the claim mathematically and state the null and
alternative hypotheses. Determine the critical value and find the test statistic. Decide whether to reject or fail to reject
the null hypothesis and interpret the decision in the context of the original claim.
-A college researcher claims that the median time worked by full time students is at least 10 hours per week. In
a random sample of 100 students, 59 worked more than 10 hours, 10 worked exactly 10 hours and the rest
worked less than 10 hours. Test the researcherʹs claim. Use $$\alpha = 0.05$$

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Definitions:

Skeletal System

The framework of bones and cartilage that supports and protects the body, allows for movement, and produces blood cells.

Acid-Base Balance

The mechanism by which the body maintains its pH within a narrow range for optimal cellular function.

Calcium Hydroxyapatite

A mineral form of calcium apatite with the formula Ca5(PO4)3(OH), which is the main structural element found in bone and teeth.

Bone Matrix

Bone matrix is the intercellular substance of bone tissue, consisting of collagen fibers and a mineralized ground substance that provides strength.