braxton24
01.10.2019 •
Mathematics
Short term classes: does taking a class in a short-term format (8 weeks instead of 16 weeks) increase a student’s likelihood of passing the course? for a particular course, the pass rate for the 16-week format is 59%. a team of faculty examine student data from 40 randomly selected accelerated classes and determine that the pass rate is 78%. which of the following are the appropriate null and alternative hypotheses for this research question? group of answer choices(a) h0: p = 0.59; ha: p ≠ 0.59(b) h0: p = 0.59; ha: p > 0.59(c) h0: p = 0.78; ha: p ≠ 0.78(d) h0: p = 0.78; ha: p > 0.59
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Ответ:
The null and alternative hypothesis should be:
(Option B)
Step-by-step explanation:
We have to determine the hypothesis accordingly to the claim we want to test.
In this case, we claim that taking a class in short-term format increase a student's likelihood of passing the course.
The null hypothesis is then that the likelihood stays the same, that is equal to 59% (the long-term likelihood of passing).
The alternative hypothesis, that is our claim based on the sample result (p=78%), is that the likelihood is bigger than 59%.
Then we can write:
Ответ:
C) is the most appropriate.
Step-by-step explanation:
The pass rate for the 16-week format was obtained for only one particular course, whereas the pass rate for the 8-week format was obtained by examining 40 randomly selected, so should be
:“The pass rate is p=0.78”
and
: ““The pass rate is p<0.78”
But, from among the possible answers of choice, C) is the most suitable.
:“The pass rate is p=0.78”
and
: ““The pass rate is p≠0.78”
Ответ:
B: cups of dry goods
C: cups of dry goods
Total amount= A+B+C = 12 3/4 + (2/3)*12 3/4 + (2/3)(2/3)*12 3/4 = cups of dry goods