Many Elementary School Students in a School District Currently Have

question 71

Multiple Choice

Many elementary school students in a school district currently have ear infections.A random sample of children in two different schools found that 13 of 46 at one school and 15 of 30 at the other had this
Infection.At the .05 level of significance, is there sufficient evidence to conclude that a difference exists
Between the proportion of students who have ear infections at one school and the other?

• A)Yes, there is sufficient information to reject the hypothesis that the proportions of students at the two
• Schools who have ear infections are the same because the test value -16.96 is outside the acceptance
• Region (-1.96,1.96).
• B)No, there is not sufficient information to reject the hypothesis that the proportions of students at the two
• Schools who have ear infections are the same because the test value -1.92 is inside the acceptance region
• (-1)96,1.96).
• C)Yes, there is sufficient information to reject the hypothesis that the proportions of students at the two
• Schools who have ear infections are the same because the test value -2.52 is outside the acceptance
• Region (-1.96,1.96).
• D)Yes, there is sufficient information to reject the hypothesis that the proportions of students at the two
• Schools who have ear infections are the same because the test value -9.44 is outside the acceptance
• Region (-1.96,1.96).

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Definitions:

Split-Off Point

The stage in a production process where joint products can be recognized as separate products, each with its own identifiable costs.

Joint Production Process

A manufacturing process in which two or more products are produced simultaneously from the same raw materials or inputs.

Budgeted Data

Forecasted or planned financial information used for budgeting and planning purposes.

Special Molds

Custom-designed molds used in manufacturing processes to produce unique product shapes or designs.