Two professors at a local college developed a new teaching curriculum designed to increase students' grades in math classes. In a typical developmental math cours 49% of the students complete the course with a letter grade of A, B, or C. In the experimental course, of the 17 students enrolled, 12 completed the course with a lette grade of A, B, or C. Is the experimental course effective at the a = 0.05 level of significance? Complete parts (a) through (g). (e) Suppose the course is taught with 51 students and 36 complete the course with a letter grade of A, B, or C. Verify whether the normal model may now be used to estimate the P-value. Because npo (1- Po) = 12.7 > 10, the sample size is less than 5% of the population size, and the sample can be reasonably assumed to be random, th normal model may be used to approximate the P-value. (Round to one decimal place as needed.) (f) Use the normal model to obtain and interpret the P-value. State your conclusion to the hypothesis test. First find the test statistic, zo- Zo = (Round to two decimal places as needed.)

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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,
49% of the students complete the course with a letter grade of A, B, or C. In the experimental course, of the 17 students enrolled, 12 completed the course with a letter
grade of A, B, or C. Is the experimental course effective at the = 0.05 level of significance? Complete parts (a) through (g).
(e) Suppose the course is taught with 51 students and 36 complete the course with a letter grade of A, B, or C. Verify whether the normal model may now be used to
estimate the P-value.
Because npo (1 - Po)
= 12.7
> 10, the sample size is
less than
5% of the population size, and the sample
can be reasonably assumed to be random,
the
normal model
may
be used to approximate the P-value.
(Round to one decimal place as needed.)
(f) Use the normal model to obtain and interpret the P-value. State your conclusion to the hypothesis test.
First find the test statistic, zo:
(Round to two decimal places as needed.)
=
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, 49% of the students complete the course with a letter grade of A, B, or C. In the experimental course, of the 17 students enrolled, 12 completed the course with a letter grade of A, B, or C. Is the experimental course effective at the = 0.05 level of significance? Complete parts (a) through (g). (e) Suppose the course is taught with 51 students and 36 complete the course with a letter grade of A, B, or C. Verify whether the normal model may now be used to estimate the P-value. Because npo (1 - Po) = 12.7 > 10, the sample size is less than 5% of the population size, and the sample can be reasonably assumed to be random, the normal model may be used to approximate the P-value. (Round to one decimal place as needed.) (f) Use the normal model to obtain and interpret the P-value. State your conclusion to the hypothesis test. First find the test statistic, zo: (Round to two decimal places as needed.) =
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