Reference no: EM132514836
1. A political researcher wants to see how much money on average is raised by campaigners.
Last year, he found that on average $60M was raised but he thinks that it has gone up since then. What are the appropriate hypotheses? _______
a) H0: p = 60 vs Ha: p > 60 b) H0: p = 60 vs Ha: p ≠ 60 c) H0: p = 60 vs Ha: p < 60
d) H0: μ = 60 vs Ha: μ > 60 e) H0: μ = 60 vs Ha: μ ≠ 60 f) H0: μ = 60 vs Ha: μ < 60
2. You wish to test whether a new study program improves student test scores. You know that all test scores are normal with an unknown mean, but you know from past data that the scores had a mean last year of 100 and a standard deviation of 20. You plan to do the correct statistical test of H0: μ = 100 vs Ha: μ > 100, and collect a random sample of 16 students, finding their average to be 120. What is the proper test statistic?
a) 20 b) 5.0 c) 1.0 d) 4.0 e) 16.0 _______
3-4. In a properly conducted right-tailed test, you find z* = 2.35.
3. State the p value: _______
4. If you are doing the test at α = 0.01, what can you do to decide your test? _______
a) You can make a 99% CI and see if your hypothesized value is in the CI or not.
b) You can compare your z* to z = 1.96
c) You can compare your p value above against the standard value of 0.05
d) You can use the Classical Method with zc = 2.326
e) none of the above
5. Adam does a statistical test and finds his p-value to be 0.038.
If he had set his significance level to 0.05 prior to the test, then what should he decide? _______
a) He should not reject the null hypothesis in favor of the alternative hypothesis.
b) He should reject the null hypothesis in favor of the alternative hypothesis.
c) He should reject the alternative hypothesis in favor of the null hypothesis.
d) He should reject the null hypothesis with reservations about the test methods.
e) He should decide to conduct another test with a greater significance level.
f) He should decide to conduct another test with a greater sample size.
Please show any work necessary for all questions.