let west side is sample 1
so we have n1=20 sample mean =m1=32.840 sample SD=S1=14.524
let east side is sample 2
so we have n2=22 sample mean =m2=26.009 sample SD=S2=11.306
1.
since we are testing that if there is difference in mean weight or not hence
since we do not have knowledge about true standard deviation hence
we will use
t distribution
since it is assumed that both variances are equal hence
DF=n1+n2-2=20+22-2=40
standard error of test statistics is given by
now test statistics is given
P Value =2*P(t>2.57) =2*0.007=0.014
Since P Value is less than level of significance hence
we reject H0
A group of researchers on Sable Island are wondering whether the grey seals pups on the...
A group of researchers on Sable Island are wondering whether the grey seals pups on the west side of the island grow at different rates than those on the east side of the island. To test this they measured the weight of 27 one week old grey seal pups on the west side of the island and 20 one week old grey pups on the east side of the island. They found that the average weight of one week old...
A group of researchers on Sable Island are wondering whether the grey seals pups on the west side of the island grow at different rates than those on the east side of the island. To test this they measured the weight of 24 one week old grey seal pups on the west side of the island and 22 one week old grey pups on the east side of the island. They found that the average weight of one week old...
A group of researchers on Sable Island are wondering whether the grey seals pups on the west side of the Island grow at different rates than those on the east side of the island. To test this they measured the weight of 21 one week old grey seal pups on the west side of the island and 28 one week old grey pups on the east side of the island. They found that the average weight of one week old...
Standard error is not -0.24 Test Statistic is not -0.24 A group of researchers on Sable Island are wondering whether the grey seals pups on the west side of the island grow at different rates than those on the east side of the island. To test this they measured the weight of 27 one week old grey seal pups on the west side of the island and 20 one week old grey pups on the east side of the island....
[5 total pt(s)] Grey seals are capital breeders and stay with their pups until they are weaned. A group of researchers on Sable Island are interested in seeing whether there is a significant difference in the weight of one week old grey seal pups versus two week old pups. They measured the weight of 21 one week old pups, then weighed those same pups again one week later. The researchers found the average weight of adult female grey seals was...
[5 total pt(s)] Grey seals are capital breeders and stay with their pups until they are weaned. A group of researchers on Sable Island are interested in seeing whether there is a significant difference in the weight of one week old grey seal pups versus two week old pups. They measured the weight of 23 one week old pups, then weighed those same pups again one week later. The researchers found the average weight of adult female grey seals was...
old pups was 35.52 log. The variance af the difference between the one week and two week pup weights was found to the average weight of adult female grey seals was 746.37 kg, the average walantot ara week old pups ans 31.94 kg and the average walant of two week 15 total psy Grey seals are capital breeders and stay with their pups until they are weaned. A group of researchers on Sable Island are interested in seeing whether there...
Samples of three different species of amphibian (frog, toad and salamander) were collected and dissected and the number of parasites found within each was counted and recorded. The researchers are interested in determining whether the distribution of parasites across species is different. The number of parasites within each sample was counted and recorded. Toads Frogs Salamanders 15 8 6 15 3 3 5 16 4 2 2 5 8 4 4 6 2 8 18 0 4 6 2 7...
Assume that both populations are normally distributed. a) Test whether H1 H2 at the a= 0.10 level of significance for the given sample data. b) Construct a 90% confidence interval about H1 - H2 n Sample 1 17 16.9 3.5 Sample 2 17 18.6 4.2 S BE! Click the icon to view the Student t-distribution table. a) Perform a hypothesis test. Determine the null and alternative hypotheses. O A. Ho: Hy #H2, H: H = H2 OB. Ho: H1 =...
Samples of three different species of amphibian (frog, toad and salamander) were collected and dissected and the number of parasites found within each was counted and recorded. The researchers are interested in determining whether the distribution of parasites across species is different. The number of parasites within each sample was counted and recorded. Toads Frogs Salamanders 4 3 9 2 9 9 3 6 4 3 5 9 2 8 8 5 4 14 3 5 8 The researchers made...