Question

Please show me how to work the problem. Last problem only gave answers and I really want to understand this. Thank

you.

The types of browse favored by deer are shown in the following table. Using binoculars, volunteers observed the feeding habits of a random sample of 320 deer.

Type of BrowsePlant Composition 

in Study AreaObserved Number of Deer 

Feeding on This Plant

Sage brush          32% 93                

Rabbit brush          38.7% 135                

Salt brush          12% 40               

 Service berry            9.3% 29                

Other            8% 23                

Use a 5% level of significance to test the claim that the natural distribution of browse fits the deer feeding pattern.

(a) What is the level of significance? 

State the null and alternate hypotheses.

A) H₀: The distributions are the same.

H₁: The distributions are different.

B) H₀: The distributions are the same.

H₁: The distributions are the same.

C) H₀: The distributions are different.

H₁: The distributions are different.

D) H₀: The distributions are different.

H₁: The distributions are the same.

(b) Find the value of the chi-square statistic for the sample. (Round the expected frequencies to at least three decimal places. Round the test statistic to three decimal places.) 

Are all the expected frequencies greater than 5?

Yes

No

What sampling distribution will you use?

uniform

binomial  

normal

chi-square

Student’s t

What are the degrees of freedom? 

 ______

(c) Estimate the P-value of the sample test statistic. 

P-value > 0.100

0.050 < P-value < 0.100    

0.025 < P-value < 0.050

0.010 < P-value < 0.025

0.005 < P-value < 0.010

P-value < 0.005

(d) Based on your answers in parts (a) to (c), will you reject or fail to reject the null hypothesis that the population fits the specified distribution of categories?

Since the P-value > α, we fail to reject the null hypothesis.

Since the P-value > α, we reject the null hypothesis.

Since the P-value ≤ α, we reject the null hypothesis.

Since the P-value ≤ α, we fail to reject the null hypothesis.

(e) Interpret your conclusion in the context of the application.

At the 5% level of significance, the evidence is sufficient to conclude that the natural distribution of browse does not fit the feeding pattern.

At the 5% level of significance, the evidence is insufficient to conclude that the natural distribution of browse does not fit the feeding pattern.

 

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