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Mathematics, 18.12.2019 17:31 settasav9641
Aprofessor is trying to determine if her students guessed on a certain multiple choice question. she expects that if the students guessed, the distribution of answers would be uniform for that question. she compares the observed distribution of answers with the uniform distribution. the professor conducts a chi-square goodness-of-fit hypothesis test at the 5% significance level.
a) the null and alternative hypotheses are: h0: the student answers have the uniform distribution. ha: the student answers do not have the uniform distribution.
b) χ20=13.167.
c) χ20.05=7.815.
d) what conclusions can be made?
select all that apply:
a. we should reject h0.
b. we should not reject h0.
c. at the 5% significance level, there is sufficient evidence to conclude that the students were not guessing.
d. at the 5% significance level, there is not enough evidence to conclude that the students were not guessing.
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