Question

II.18 The researchers also measured the number of esčape attempts during the medical procedure for each cat. A 95% confidence interval for the difference in mean num ber of escape attempts (per cat) was (Mtrained Huntrained and was given to be (-1.29, -0.17) attempts per cat. Suppose a nondirectional two-sample t test was conducted on these same data. State whether the following state- ments are true or false or cannot be determined without further computations. Explain why (a) The P-value for the two-sample t test would be greater than 0.05. (b) There is statistically significant evidence (at the α 0.05 level) that the mean number of escape attempts per cat is not the same for trained and untrained cats (c) There is statistically significant evidence (at the α 0.01 level) that the mean number of escape attempts per cat is not the same for trained and untrained cats. (d) There is statistically significant evidence (at the a0.10 level) that the mean number of escape attempts per cat is not the same for trained and untrained cats.

Answer 1

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