1. A zookeeper hypothesizes that changing the intensity of the light in the prim
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Question
1. A zookeeper hypothesizes that changing the intensity of the light in the primate exhibits will reduce the amount of aggression between the baboons. In exhibit A, with a lower light intensity, he observes 36 incidences of aggression over a one month period. In exhibit B, with normal lights, he observes 42 incidences of aggression. Should he support or reject his hypothesis? a. Formulate a null hypothesis and an alternative hypothesis: Ho: HA: b. Formulate a prediction based on the null hypothesis: c. Conduct a Chi-squared test. Show your work for full credit! d. Analyze your results using the chi-squared table at the end of the document, and write a conclusion (be sure to address whether the null hypothesis is supported or rejected).Explanation / Answer
1) a) Null hypothesis Ho: The aggression between the baboons is not affected by changing the intensity of light.
Alternate hypothesis Ha: The aggression between the baboons will change when the intensity of light changes.
b) According to null hypothesis, the aggressive behavior of baboons is not affected by light intensity.
c)
The chi square value is 5.2
The critical value from the table is 6.22
d) Since the chi square value is less than the critical value, null hypothesis is true. So, changing the intensity of light does not change the aggressive behavior of baboons.
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O E O-E (O-E)^2 (O-E)2/E Exhibit A 36 50 -14 196 3.92 Exhibit B 42 50 -8 64 1.28Related Questions
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