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"Domestic Goats Follow Gaze Direction and Use Social Cues in An Object Choice Task," published online in Animal Behavior in January 2005, included information on 23 goats' performance in a bucket-selection task.
a. If a comparison is to be made for each goat's performance when cued by touching versus pointing, would this be a paired, two-sample, or several-sample design?
b. State the appropriate null hypothesis, first in terms of variables and then in terms of parameters.
Paul received a score of 80 on a history test for which the class mean was 70 with a standard deviation of 10. He received a score of 75 on a biology test for which the class mean was 70
No, there is not enough information to refuse hypothesis that proportion of male students who live on campus and proportion of female students who live on campus are same as the test value -1.65 is inside acceptance region (-1.96,1.96).
Using a one-sided hypothesis test with a 90% confidence level, which of the following statements do these data support?
Consider a chess player participating in a two-game pre-tournament quali?cation series. From past records in such games, it is known that the player has a probability pW = 0.75 of winning, a probability pD = 0.2 of drawing, and a probability pL = ..
What is the mean wage in female-dominated and male-dominated jobs? Does the differential necessarily indicate discrimination?
Let (S, T ) be a second-countable topological space and (Y, d) any metric space. Show that the Borel σ-algebra in the product S × Y is the product σ-algebra of the Borel σ-algebras in S and in X.
Mean = 14.2, s² = 5.92 and sum of X squared EX² = 2941.60. What can be concluded about age differences in problem solving ability?
Problem: Sisters and brothers. How strongly do physical characteristics of sisters and brothers correlate? Here are data on the heights (in inches) of 12 adult pairs:12
If all 20 numbers were equally likely to be chosen, what proportion of students would choose each number?
Suppose a study on the relationship between gender and political party included 200 men and 200 women and found 180 Democrats and 220 Republicans.
State the null hypothesis and determine the ANOVA table. What is the result of the F test? Apply Tukey's HSD test to see which means differ if the ANOVA was significant at the 5% level.
In checking the quality of the work, she notices that some slight blemishes occasionally are apparent. A sample of 20 pieces of work resulted in the following number of blemishes on each piece:
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