I only need 10.4, 8.8 is for refrence. I looked up online and there is 2 answers online and idk which one is right, one answer is they do s1/s2 and get f then get p=0.993 so no eveidence. The other answer is u get t= -4.24 and p=0.00012 and so there is enough evidence. Plz dont make a guess and try to give the right answer Problem 8.8. Between 1967 and 1995, South Africa controlled its elephantpopulations through “culling", i.e. killing older animals. Scientists believethat in some populations, the surviving young elephants who experiencedculling have symptoms similar to the post-traumatic stress disorder in hu-mans. The authors of article [60] investigated the effects of culling, usinga variable called "bunching intensity", which gives the response to threatfor a family of adult female elephants. This variable has values between 0and 4, with 0 ="no response" and 4 = "very fast response". We considertwo populations of elephants, one of which had experienced culling and theother had not. A sample of n1 families from the culled population has amean bunching intensity of 1.2, whereas a sample of n2 families from thenon-culled population has a mean bunching intensity of 2.5. The meanbunching intensity for the combined two samples is 1.7. What is the pro-portion of families who experienced culling in the combined two samples? Problem 10.4. We continue with the situation in Problem 8.8. Assumethat the two sample sizes are nį = 19 and n2 = 12 and the two samplevariances are s = 0.81 and s = 0.49. Is there enough evidence that fam-ilies from culled populations have a lower bunching intensity than familiesfrom non-culled populations? Use a test of hypothesis at level a = 0.005.Suppose that the two populations are normally distributed with equal vari-%3Dances.

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Description: I only need 10.4, 8.8 is for refrence. I looked up online and there is 2 answers online and idk which one is right, one answer is they do s1/s2 and get f then get p=0.993 so no eveidence. The other answer is u get t= -4.24 and p=0.00012 and so there

Answered: Problem 10.4. We continue with the…

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I only need 10.4, 8.8 is for refrence. I looked up online and there is 2 answers online and idk which one is right, one answer is they do s1/s2 and get f then get p=0.993 so no eveidence. The other answer is u get t= -4.24 and p=0.00012 and so there is enough evidence. Plz dont make a guess and try to give the right answer

Problem 8.8. Between 1967 and 1995, South Africa controlled its elephant
populations through “culling", i.e. killing older animals. Scientists believe
that in some populations, the surviving young elephants who experienced
culling have symptoms similar to the post-traumatic stress disorder in hu-
mans. The authors of article [60] investigated the effects of culling, using
a variable called "bunching intensity", which gives the response to threat
for a family of adult female elephants. This variable has values between 0
and 4, with 0 =
"no response" and 4 = "very fast response". We consider
two populations of elephants, one of which had experienced culling and the
other had not. A sample of n1 families from the culled population has a
mean bunching intensity of 1.2, whereas a sample of n2 families from the
non-culled population has a mean bunching intensity of 2.5. The mean
bunching intensity for the combined two samples is 1.7. What is the pro-
portion of families who experienced culling in the combined two samples?

Problem 10.4. We continue with the situation in Problem 8.8. Assume
that the two sample sizes are nį = 19 and n2 = 12 and the two sample
variances are s = 0.81 and s = 0.49. Is there enough evidence that fam-
ilies from culled populations have a lower bunching intensity than families
from non-culled populations? Use a test of hypothesis at level a = 0.005.
Suppose that the two populations are normally distributed with equal vari-
%3D
ances.

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