Two professors at a local college developed a new teaching curriculum designed to increase students' grades in math classes. In a typical developmental math course, 51% of the students complete the course with a letter grade of A, B, or C. In the experimental course, of the 16 students enrolled, 12 completed the course with a letter grade of A, B, or C. Is the experimental course effective at the a = 0.025 level of significance? Complete parts (a) through (g).

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Two professors at a local college developed a new teaching curriculum designed to increase students' grades in math classes. In a typical developmental math course, 51% of the students
complete the course with a letter grade of A, B, or C. In the experimental course, of the 16 students enrolled, 12 completed the course with a letter grade of A, B, or C. Is the experimental
course effective at the a = 0.025 level of significance? Complete parts (a) through (g).
.... .
(a) State the appropriate null and alternative hypotheses.
Ho: P =
0.51 versus H:
0.51
>
(Type integers or decimals. Do not round.)
(b) Verify that the normal model may not be used to estimate the P-value.
Because npo (1- Po)
10, the normal model
be used to approximate the P-value.
(Round to one decimal place as needed.)
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Transcribed Image Text:Two professors at a local college developed a new teaching curriculum designed to increase students' grades in math classes. In a typical developmental math course, 51% of the students complete the course with a letter grade of A, B, or C. In the experimental course, of the 16 students enrolled, 12 completed the course with a letter grade of A, B, or C. Is the experimental course effective at the a = 0.025 level of significance? Complete parts (a) through (g). .... . (a) State the appropriate null and alternative hypotheses. Ho: P = 0.51 versus H: 0.51 > (Type integers or decimals. Do not round.) (b) Verify that the normal model may not be used to estimate the P-value. Because npo (1- Po) 10, the normal model be used to approximate the P-value. (Round to one decimal place as needed.) Help me solve this View an example Get more help - Clear all Check answer
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