Reference no: EM132844663
For the following experiment, state the type of test we should use. Assume homogeneity of variance (where applicable) and the validity of parametric tests (where applicable), unless something is directly stated (e.g., "the data are not at all normal") or otherwise indicated (viz., by the inspection of the data) which would indicate an obvious violation of an assumption. This means you must inspect the data for violations of all assumptions. Assume n is large enough, unless stated. Assume σ is unknown, unless stated.
Professor Shirey takes a sample of 20 students to see if they are excited after they hear they have earned an A in their stats class. He first measures their pulse, then reveals their final grade, and then re-takes their pulse. The data is below.
Beginning Ending
Pulse Pulse
64 73
67 74
92 88
77 88
58 52
84 80
80 87
77 71
71 80
Group of answer choices
a one sample z-test for proportions
a chi-squared goodness-of-fit test
) a related samples t-test
an independent samples t-test with homogeneity of variance
an independent samples t-test with heterogeneity of variance
none of the other tests
a one-sample z test for means
a one-sample t-test for means
a z-test for the difference between proportions