As a biologist working for the Kenya Wildlife Service, you want to determine the

Question

As a biologist working for the Kenya Wildlife Service, you want to determine the spatial distribution of rhino populations in Nairobi National Park. Specifically, you want to determine if the rhinos are randomly dispersed, or if they are more frequently grouped in some areas. The park has been previously surveyed and a grid system established. During your weekly surveys of the park, you record the grid cell location of every rhino you sight. There are 10 grid cells (k = 10), with each grid cell 20 ha in size. The results are: Signa^10_i=1 x_i=104 Sigma^10_i=1 x62_i=1820 a. Calculate the mean and variance of the number of rhino sightings per cell. b. Based on the information above, test (alpha = 0.05) whether there is a significant spatial pattern to the distribution of rhino sightings, or whether the pattern is random. i. What are the null and alternative hypotheses? ii. Perform a test and interpret the results.

Explanation / Answer

Descriptive Statistics: no of rhios

Variable      Mean Variance
no of rhios 10.40     82.04

b.

One-Sample T: no of rhios

Test of = 0 vs 0

Variable      N   Mean StDev SE Mean      95% CI        T      P
no of rhios 10 10.40   9.06     2.86 (3.92, 16.88) 3.63 0.005

P-value < 0.05 so we reject null hypothesis. We conclude that there a significany spatial pattern to the distribution of rhino sighting

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.